Starrett SR160 User manual

PKG08761- UMSR160

Trust Is In The Name

User Manual

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SR160 SURFACE ROUGHNESS TESTER

USER MANUAL

PKG08761-UMSR160 3

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TABLE OF CONTENTS

Components 5
Using the Instrument 12
Function Buttons 13
Device Icons 14
Menu 15
SR160 Overview 24
SR160 Accessories 27
SR160 Dimensions 29
Quick Start Guide 32
Spanish 35
French 59
Portuguese 83
Chinese 107
German 131
Italian 155

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COMPONENTS

12

9

8

7

6

1. BLUETOOTH TECHNOLOGY - Quick, reliable communication between traverse and

display/control unit.

– TECNOLOGÍA BLUETOOTH - Comunicación rápida y confiable entre el mecanismo

transversal y la pantalla/unidad de control.

– TECHNOLOGIE BLUETOOTH - Communication rapide et fiable entre l'unité d'avance

et l'unité d'affichage/de mesure.

– TECNOLOGIA BLUETOOTH - Comunicação rápida e confiável entre a unidade móvel

e a unidade de exibição/controle.
– 㬓⢏ᢶᵥ - 〱ࣞ䜞Ԭфᱴ⽰/᧝࡬䜞Ԭҁ䰪ᘡ䙕Ƚ䶖䙐ؗȾ
– BLUETOOTH-TECHNOLOGIE - Schnelle, zuverlässige Datenübertragung zwischen

Linearvorschubgerät und Display/Steuergerät.
– TECNOLOGIA BLUETOOTH - Comunicazione rapida e affidabile tra l'unità trasversale

e l'unità di visualizzazione/controllo.

2. PROFILE GRAPH - Clear detailed graph showing measurement area - excellent for
visually identifying defects.

– GRÁFICO DE PERFILES - Gráfico claro y detallado que muestra el área de medición -

excelente para identificar defectos visualmente.

– GRAPHIQUE DE PROFIL - Graphique détaillé clair représentant la zone de mesure

- excellent pour l'identification visuelle des défauts.

– GRÁFICO DE PERFIL - Gráfico claro e detalhado indicando a área medida:

excelente para a identificação visual de defeitos.
– 䖤ᔉഴ - ␻ᾐȽ䈜㓼ᱴ⽰㻡⎁ตⲺഴᖘ,࠰㢨Ⲻ㚿⵲䇼ࡡ㕰䲭ࣕ㜳Ⱦ
– PROFILDIAGRAMM - Klares, detailliertes Diagramm zeigt die Messfäche –

ausgezeichnet zum visuellen Identifizieren von Mängeln.
– GRAFICO DEL PROFILO - Chiaro grafico dettagliato che mostra l'area di misurazione

- eccellente per l'identificazione visiva dei difetti.

3

4

5

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COMPONENTS

3. SIMPLE 3-BUTTON NAVIGATION - Instant access to menu option settings.
– NAVEGACIÓN SIMPLE CON 3 BOTONES - Acceso instantáneo a los ajustes de

opciones del menú.

– NAVIGATION SIMPLE À 3 TOUCHES - Accès instantané aux réglages des options de menu.
– NAVEGAÇÃO SIMPLES COM UTILIZAÇÃO DE 3 BOTÕES - Acesso imediato às

configurações de opção do menu.
– ㆶঋ 3 䭤ሲ㡠 - ঩ᰬ䇵䰤㨒ঋ䘿亯䇴㖤Ⱦ
– EINFACHE 3-TASTEN-NAVIGATION Schneller Zugriff auf die Menüoptionseinstellungen.

– NAVIGAZIONE SEMPLICE CON 3 TASTI Accesso immediato alle impostazioni dei menu.

4. USB MINI CHARGING PORT - Charge from mains or any standard USB charging port.
– MINIPUERTO DE CARGA USB - Carga desde la alimentación principal o cualquier

puerto de carga USB estándar.

– PORT MINI USB POUR LA RECHARGE - Recharge sur le secteur ou sur tout port

USB standard de recharge.

– PORTA DE CARREGAMENTO MINI USB - A bateria pode ser carregada pela

alimentação principal ou por qualquer porta USB padrão.
– USB 䘭֖ݻ⭫᧛ - Ԅ⭫ⓆᡌԱ֋ USB ḽ߼ݻ⭫᧛ݻ⭫Ⱦ
– USB MINI-LADEANSCHLUSS - Laden an einer Steckdose oder an einem

standardmäßigen USB-Ladeanschluss.
– PORTA MINI USB PER LA CARICA - Può essere caricato tramite qualsiasi porta USB

standard o tramite adattatore CA.

5. RUBBERIZED MOLDING - Enhanced durability and improved grip provides unbeatable
protection in harsh shop floor environments.

– MOLDURAS DE CAUCHO - La durabilidad realzada y el mejor agarre proporciona

una protección inigualable en entornos exigentes de taller.

– MOULAGE CAOUTCHOUTÉ - La meilleure prise en main constitue une protection

imbattable dans les environnements d'atelier difficiles, pour une durée de vie prolongée.

– GUARNIÇÃO DE BORRACHA - Maior durabilidade e aderência oferecem proteção

inigualável nos ambientes hostis do chão de fábrica.
– ₗ㜬ᡆශ - ໔ᕰ㙆⭞ᙝ, ᭯㢥ᨗ󰶛, Ѱᚬࣙᐛ֒⧥ູᨆבᴶ֩ؓᣚȾ
– GUMMIERTE BLENDE - Verbesserte Langlebigkeit und besserer Griff sorgen für

ausgezeichneten Schutz in der Werkstatt.
– INVOLUCRO IN GOMMA - La maggiore durata e un'impugnatura migliore forniscono

una protezione senza pari in ambienti industriali ostili.

6. LI-POL

Y BATTERY - Most advanced rechargeable battery technology for unrivalled

reliability and battery life.

– BATERÍA DE LI-POLI - La tecnología más avanzada de baterías recargables para

una confiabilidad y una vida útil de la batería inigualadas.
– BATTERIE LI-POLY - La technologie de batterie rechargeable la plus avancée pour

une fiabilité et une durée de vie inégalées de la batterie.
– BATERIA DE POLÍMERO DE LÍTIO - A mais avançada tecnologia de baterias

recarregáveis para oferecer vida útil e confiabilidade incomparáveis.
– 䬸㚐⭫⊖ - ݾ䘑Ⲻݻ⭫⭫⊖ᢶᵥ, ᴶ֩䶖ᙝૂ⭫⊖㔣㡠ᰬ䰪Ⱦ
– LI-POLY-AKKU - Die fortschrittlichste Akkutechnologie für höchste Zuverlässigkeit

und lange Akkulebensdauer.
– BATTERIA AI POLIMERI DI LITIO (LI-POLY) - La batteria ricaricabile più avanzata per

un'affidabilità e una durata senza pari.

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COMPONENTS

7. DIAMOND STYLUS AND PIEZOELECTRIC PICK-UP - The hard wearing, robust
piezoelectric pick-up stylus with diamond tip assures very reliable measurement.

– ESTILETE DE DIAMANTE Y DISPOSITIVO PIEZOELÉCTRICO DE RECOGIDA - El robusto

y duradero estilete piezoeléctrico de recogida con punta de diamante asegura una
medición muy confiable.

– PALPEUR EN DIAMANT ET CAPTEUR PIÉZO-ÉLECTRIQUE - Le capteur piézo-électrique

robuste et résistant à l'usure à palpeur en diamant garantit une mesure très fiable.

– AGULHA DE DIAMANTE E SENSOR PIEZOELÉTRICO - Sensor piezoelétrico robusto e

resistente e agulha com ponta de diamante asseguram medidas altamente confiáveis.

– 䠇ࡐ⸩䀜䪾ૂু⭫Ֆ᝕ - ඐര㙆⼞Ⲻু⭫Ֆ᝕䀜䪾, 䠇ࡐ⸩䀜䪾ቌ, ⺤

ؓ⎁䠅䶖ᙝȾ

– DIAMANT-STYLUS UND PIEZOELEKTRISCHER TASTER - Der robuste,

verschleißbeständige piezoelektrische Taster mit Diamantspitze gewährleistet
extrem zuverlässige Messungen.

– STILO IN DIAMANTE E PICK-UP PIEZOELETTRICO - Stilo con pick-up piezoelettrico

robusto e a lunga durata con punta in diamante per una misurazione molto affidabile.

8. SEPARATES - The SR160 splits into a display/control unit and traverse unit via a
slide and lock mechanism.

– COMPONENTES SEPARADOS - El SR160 se divide en una pantalla/unidad de control

y una unidad transversal por medio de un mecanismo de deslizamiento y bloqueo.

– EN DEUX PARTIES - Le SR160 se sépare en une unité d'affichage/de mesure et

une unité d'avance à l'aide d'un mécanisme à emboîtement.

– SEPARAÇÃO - Com seu mecanismo de deslizamento e trava, o SR160 pode ser

separado em duas unidades: uma unidade móvel e uma unidade de exibição/controle.

– ࠼։ᕅ - SR160 ⭧┇ࣞૂരᇐᵰᶺ࠼䳊ᡆᱴ⽰/᧝࡬䜞Ԭૂ〱ࣞ䜞ԬȾ

– AUSEINANDERNEHMBAR - Das Modell SR160 lässt sich anhand eines Gleit- und

Arretiermechanismus in das Display/Steuergerät und das Linearvorschubgerät trennen.

– SEPARABILE - L'SR160 si separa in unità di visualizzazione/controllo e unità

trasversale con un meccanismo di scorrimento e blocco.

9. MEASURE - Tactile measurement button great for challenging orientations.

– MEDICIÓN - Botón táctil de medición, ideal para orientaciones complejas.
– MESURE - Touche de mesure tactile très pratique pour les orientations difficiles.
– MEDIDAS - Botão de medição tátil, excelente para dificuldades de orientação.

– ⎁䠅 - 䀜᧝⎁䠅䭤ᶷѰ䘸⭞ӄ⎁䠅䳴ᓜ儎ⲺᯯȾ

– MESSEN - Taktile Messtaste für anspruchsvolle Ausrichtungen.

– MISURAZIONE - Tasto per la misurazione tattile utile per gli orientamenti più complessi.

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COMPONENTS

FAST AND RELIABLE

Simply press the measurement button and in a few seconds a full set of
traceable measurement results including a detailed profile graph is displayed.

RÁPIDO Y CONFIABLE

Simplemente pulse el botón de medición y en unos pocos segundos
a

parecerá un conjunto completo de resultados rastreables de medición,

incluido un gráfico detallado del perfil.

RAPIDE ET FIABLE

Appuyez simplement sur la touche de mesure et, en quelques secondes,
un ensemble complet de résultats de mesure traçables s’affiche, dont un
graphique détaillé du profil.

RÁPIDO E CONFIÁVEL

Basta pressionar o botão de medição e, em poucos segundos, aparecerá
um conjunto completo de medições rastreá
um gráfico de perfil detalhado.

ᘡ䙕Ƚ䶖
䴶᤿⎁䠅䭤, ᮦ〈޻঩ᱴ⽰࠰ж㓺ᇂ᮪Ƚ䘳ⓥⲺ⎁䠅㔉

󰵳, 䈜㓼Ⲻ䖤ᔉഴȾ

SCHNELL UND ZUVERLÄSSIG

Drücken Sie einfach die Messtaste und nach einigen Sekunden wird
ein Sa

tz nachverfolgbarer Messergebnisse mit einem detaillierten

Profildiagramm angezeigt.

VELOCE E AFFIDABILE

Premere semplicemente il tasto di misurazione e in alcuni secondi
vengono visualizza
del profilo.

ti i risultati tracciabili compreso un grafico dettagliato

veis, incluindo a exibição de

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COMPONENTS

BUILT TO LAST, BY DESIGN

Impact resistant rubberized moldings surround a recessed, Mylar
protected high durability screen making the unit robust.

CONSTRUIDO PARA DURAR, POR DISEÑO

Las molduras de caucho, resistentes al impacto, que rodean una pantalla
empotrada,

de alta durabilidad, protegida por Mylar permiten que la

unidad sea robusta.

CONÇU POUR DURER

La robustesse de l’unité est assurée par un moulage caoutchouté
antichoc accueillant un écran haute durabilité en retrait et muni d’une
protection en Mylar.

PROJETADO E CONSTRUÍDO PARA DURAR

Guarnições de borracha resistente ao impacto contornam uma tela
reentrante de alta durabilidade protegida com Mylar
à unidade.

㋴ᗹ䇴䇗, 䮵ѻֵ⭞
ᎂޛᕅȽ儎㙆⭞ኅᒋ, ᑜ Mylar ؓᣚ㟒, ઞപ㾼㙆ߨ࠱ₗ㜬,

ֵ䜞ԬᴪඐരȾ

DESIGN FÜR LANGFRISTIGEN EINSATZ

Die stoßfeste, gummierte Blende um das mit Mylar geschützte langlebige
Display sorgen für ein robustes Gerä

PROGETTATO E FATTO PER DURARE

L'involucro in gomma resistente agli urti circonda il robusto schermo
incassa

to, con protezione in Mylar, e rende l'unità più resistente.

t.

, dando resistência

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SR160 SURFACE ROUGHNESS TESTER

THIS IS A STARRETT USER GUIDE FOR THE SR160 SURFACE

ALL SPECIFICATIONS IN THIS DOCUMENT ARE CORRECT AT TIME

OF PRODUCTION AND ARE SUBJECT TO CHANGE. PLEASE CONTACT

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ROUGHNESS TESTER.

STARRETT FOR FURTHER INFORMATION.

PKG08761-UMSR160 11

ENGLISH

USING THE INSTRUMENT

OVERVIEW

Traverse unit

Status LED

power button

Pick up and stylus

SR160 OPERATION MODE

Display unit power/
Measure button

Color screen

USB Charging port

3 Menu buttons

'Connected' mode

SR160 STORAGE MODE

'Connected' mode

12 PKG08761-UMSR160

'Separated' mode

Slides apart

'Storage' mode

Slides apart

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FUNCTION BUTTONS

ENGLISH

UNIT POWER/MEASURE BUTTON - SEP
POWER

• Both the display unit and the traverse unit will need to be powered On/
Off individually.
power button for 3 seconds or more to switch Off/On.

MEASURE

• Press the red button on the display unit for < 3 seconds

UNIT POWER/MEASURE BUTTON - CONNECTED MODE

POWER

• Both the display unit and the traverse unit can be switched on in
Connected mode configura
button is pressed. However, to power OFF, both traverse and display
unit will need to be powered off individually. Hold the red power button
for 3 seconds or more to switch OFF/ON.

MEASURE

• Press the red button on the display
unit for < 3 seconds

There is no specific order of preference. Hold the red

ARATED MODE

tion when the only the display unit power

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DEVICE ICONS

Measurement
profile graph

Measurement
results

Battery level/
Charging indication

Connectivity status

Page tabs

Calibration menu

14 PKG08761-UMSR160

Settings

Page down

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MENU

FONT SIZE (LARGE/SMALL)

Press the settings button to enter the settings menu.
Select the size of font to use in displaying the measurement results.

There are two size options available to choose from – Large and Small.
Press the to toggle between the 2 options. Press the check button
to accept the setting and exit the settings menu.

NOTE

The large style font cannot be used together with the profile graph option.
When the large font is selected,
set to 'no graph' (greyed out).

SMALL FONT

LARGE FONT

the profile graph option is automatically

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UNITS (μM/μIN)

Press the settings button to enter the settings menu.

Press the down arrow button to scroll down to the units selection line.
Press the to toggle between the 2 options – µm (Metric) or µin (English).
Press the check button to accept the setting and exit the settings menu.

Metric units (µm)

English units (µin)

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PARAMETERS (R?/P?)

Press the settings button to enter the settings menu.

Press the down arrow button to scroll down to the Parameter setting line.
Press the to toggle between the two ISO 4287 parameter options
available to display – Roughness (R) or Primary (P). Press the check
button to accept the setting and exit the settings menu. Either selection
will display all the parameters available for that particular option on the
results screen.

ISO 4287 Roughness
parameters (R)

ISO 4287 Primary
parameters (P)

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PROFILE GRAPH (ON/OFF)

Press the settings button to enter the settings menu.

Press the down arrow button to scroll down to the Graph option line. Press
the to toggle between the option of displaying or not displaying the
graph on the results screen. Press the check button to accept the setting
and exit the settings menu.

NOTE

For the graph option to be selected, the Small font option must be used.

Graph with Small Font

No graph with Small Font

No graph with Big Font

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CALIBRATION

Press the calibration button to enter the calibration menu.

In the calibration screen, the default or last saved calibration Ra value
will be displayed. To change this calibration value, press the settings
icon. Then use the up (+) and down (-) buttons to adjust the calibration
Ra value to the desired number. Press the back button to accept the value
and return to the calibration screen.

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Place the SR160 on the calibration standard provided with the unit
(or any other certified standard). Press the measure button to take a
measurement on the calibration standard.

The measured Ra value will be displayed at the end of the measurement.
To accept and complete the calibration, press the check button.

At any time, press the cross (x) button to exit the calibration menu.

Calibration complete

If calibration is more than 10% then a warning is shown.

Calibration complete

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FACTORY RESET

To reset the SR160 to factory settings, hold the settings button for about
3 seconds.

Press the delete settings button.
In the reset screen, press the check button to do a factory reset or the

cross(x) button to exit and return to the main results screen.
Press the back arrow at any time to exit and return to the results screen.
In the factory reset menu, the battery percentages of both the display unit

and the traverse unit will be displayed along with their Bluetooth address.

The factory reset function works only when the SR160 is paired (either
via Bluetooth or in connected mode).

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TEST MODE

Test Mode is initiated when the settings button is held for 3 seconds and
the test mode icon is pressed. This is for internal service and diagnostic
purposes and should NOT be used by the customer.

If at any time the test mode is inadvertently activated, switch off the unit
completely and switch back on to return the unit to normal operation.

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ERROR CODES

The following are the error codes associated with the SR160 and their meanings:

• E1 Î Motor sensor failure

• E2 Î Motor sensor misaligned

• E3 Î Motor speed failure

• E4 Î Traverse unit settings lost, returned to default

• E5 Î Display unit settings lost, returned to default

If any errors occur and are displayed, use the back button to continue.

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SR160 OVERVIEW

WHAT IT DOES

The SR160 is a superior portable surface roughness tester that measures
multiple roughness parameters with a 1-button click. Roughness
measurement parameters such as Ra, Rz, Rp, Rv and Rt are displayed
on a brightly lit intuitive 2.4" LCD color display. Its rechargeable battery
operation makes it a convenient way of performing fast, easy and precise
on-the-spot measurements in almost any environment and surface.

HOW IT DOES IT

The hard-wearing diamond stylus is drawn across the part with a
precision motorized tra
horizontal distance is travelled. Vertical movement of the stylus is
detected by a high quality piezo-electric pick-up as it travels across
peaks and valleys which converts mechanical movement into electrical
signals. The electrical signal is digitized and sent to a microprocessor for
instant calculation of surface parameters using standardized algorithms.

UKAS CALIBRATION AND TESTING

The mini USB port can be used for charging with the included mains
charger (or with an

verse mechanism to ensure that the correct

y standard USB charger).

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KEEPING IT SIMPLE

The surface roughness testing philosophy keeps the process simple. It is
the perfect tool for any inspector to check surface roughness even in the
most demanding applications.

• Incoming inspections

• Final inspection before shipment

• Process control on the production line

• Checking large components or structures

STANDARDS AND TRACEABILITY

The reference standard supplied can be used both to calibrate the
instrument and check for stylus wear to ensure the most accura
are always being achieved.

MEASUREMENT BEST CAPABILITY

Roughness standards (Ra) ±(2% + 0.004µm)
W

orkpiece or component surface texture (Ra) ±3% of measured value per trace

te results

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INSTANT ON

By utilizing Instant On technology these instruments are ready to
measure in less than 5 seconds from switching on!

IN SITU MEASUREMENTS

Monitor wear and roughness changes in situ during product's life. E.g.
monitoring changes in turbine blade roughness as an early warning sign
for defects and efficienc

USER-FRIENDLY, NOT USER-HOSTILE!

The SR160 is a simple and easy-to-use as any Smart Phone. Users have
the advanta

2.4" daylight readable industrial color LCD screen.

BLUETOOTH CONNECTIVITY

This next generation bluetooth technology boasts super efficient
connectivity allowing wireless communication between the display unit
and traverse unit.

BUILT FOR POWER…

Powered by heavy duty reliable Li-Poly technology, the SR160 operates
24/7 with over 2000 measurements from a single charge.

PARAMETERS

PARAMETERS AVAILABLE: ISO 4287 ROUGHNESS*

Rt Rp Rv Rz Ra

Total profile height

Other parameters include: Rsk, Rku, Rq, Rz1max

*Includes primary parameters

y losses.

ge of the intuitive quick access 3-button menu and its crisp

Maximum profile
peak height

Maximum profile
valley depth

Maximum height
of the profile

Arithmetic
mean deviation

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SR160 ACCESSORIES
PORTABLE HYBRID SOLAR

RECHARGEABLE POWER BANK*

Portable power bank for charging the
SR160 on the go. Can be charged by
USB, mains AC or sunlight.

COMPACT PORTABLE CARRY BAG

Helps secure the SR160 and
prevent accidental drops especially
for applications involving measuring
at heights.

USB CHARGER

Mini USB charger 5V 1A 110-240 VAC
50/60 Hz with interna

tional adapters.

ENGLISH

HARD TRANSPORT CASE*

Air and water tight case that provides
the SR160 with extra protection for
safe storage and/or transportation.

CALIBRATION STANDARD

For calibrating and checking the
SR160 instrument.

- Ra 229in (5.81m)

MAGNETIC BASE*

Lightweight compact base specially
designed to allo
in multiple orientations including
upside down on metallic surfaces.

w for measurements

* Not supplied as standard with SR160

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INSTRUMENT PERFORMANCE

GAGE Resolution 0.4µin (0.01µm)

MEASUREMENT

CALIBRATION

PARAMETERS

TECHNICAL

DATA OUTPUT On-Screen

BATTERY

POWER

INSTRUMENT CAPABILITY

PICK-UP ASSEMBLY

GAGE

FILTER

TRAVERSE

DISPLAY Units µin/µm

Range (Ra) Up to 1600µin (40µm)
Range (Rz, Rv, Rp, Rt) Up to 7800µin (199µm)
Repeatability 2% of value + noise
Accuracy 5% of reading + 4µin (0.1µm)
Noise 4µin (0.1µm)
Process Automatic software calibration
Standard Able to calculate to ISO 4287 Roughness Standards
Standards ISO 4287
ISO 4287 (Roughness) Ra, Rz, Rp, Rv, Rt, Rz1max, Rsk, Rq, Rku
ISO (Primary) Pa, Pz, Pp, Pv, Pt

Up to 5 results per page, selectable on-

Charger Mini USB 5V 1A 110-240VAC 50/60 Hz
Charging Time 4 hours
Battery Life >10,000 measurements per charge
Standby Time 5,000 hours
Instant On Max 5 sec from standby to ready to measure
Auto-Sleep Function 5 minutes

screen graph

Pick-Up Type Piezoelectric
Stylus Type Diamond, Radius 200µin (5µm)
Gage Force 200mg
Measurement Type Skidded
Filter Type Gaussian
Filter Cut-Off 0.8mm
Traverse Length 0.2in (5mm)
Traverse Speed 0.08in/sec (2mm/sec)

ENVIRONMENTAL/PHYSICAL

PHYSICAL SPECIFICATIONS

OPERATING CONDITIONS

STORAGE

28 PKG08761-UMSR160

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Weight Including Pick-Up 14oz (0.4kg)
Power Source Li-Poly rechargeable battery
Temperature 41 - 104°F (5 -40°C)
Humidity 0 - 80% non-condensing
Temperature 32 - 122°F (0 - 50°C)
Humidity 0 - 80% non-condensing

SR160 DIMENSIONS

2.1IN
(54mm)

ENGLISH

3.9IN (100mm)

3.6IN (92mm)

1.8IN
(45mm)

WHAT IS A SKID?

The SR160 is a skidded device. The skid guides the pick-up along
the workpiece,
measurement. This method usually eases set-up by reducing the need
for leveling. It also reduces the effects of vibration due to a much smaller
measuring loop.

The skid is an integral part of the gauge and has a radius large enough
to prevent movement in and out the roughness characteristics of the
surface. The stylus and the skid are independent in their height (Z)
movement but move together in the measurement direction. Surface
deviations are recorded as the difference between the stylus and the
skid movement in the Z direction.

The skid will act as a mechanical filter, taking out much of the general
form of the component. Also, wavelengths greater than the diameter of
the skid will not register.

with the workpiece itself forming the datum for

1.4IN (35mm)

PKG08761-UMSR160 29

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ENGLISH

HOW MUCH DIFFERENCE DOES THE STYLUS TIP SIZE MAKE?

These instruments use a 200in (5m) stylus tip radius. This suits their
purpose as a portable tool for checking roughness in three ways:

• Durability – It is less likely to be damaged even when subjected to mishandling.

• Maintenance – It is easier to remove dirt and oil that collects on the

tip during use.

• Suitability – It acts as a filter to remove the highest surface frequencies
that are more reliably measured in a controlled environment.

Other Starrett instruments use a stylus with a tip radius of 80in (2m).
This smaller radius coupled with an inductive gage head having low
contact force enables analysis of even the smallest surface imperfections.

4.1IN (105mm)

2.7IN
(70mm)

4.

3.

2.

1.

1. Stylus tip

2. Skid

3. Stylus movement (Z)

4. Measurement direction (X)

Note: roughness profile not drawn to scale

30 PKG08761-UMSR160

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ENGLISH

5 mm

QUICK START GUIDE

1

2

32 PKG08761-UMSR160

3

x 8 h

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Ra = 6.0 µm

Ra = 0.40 µm

ENGLISH

3 s
300 s

PKG08761-UMSR160 33

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