Bosch GAM 270 MFL Operating/Safety Instructions

IMPORTANT:

Read Before Using

Operating/Safety Instructions Consignes de sécurité/d’utilisation Instrucciones de funcionamiento

y seguridad

IMPORTANT :

Lire avant usage

IMPORTANTE:

Leer antes de usar

GAM 270 MFL

1-877-BOSCH99 (1-877-267-2499) www.boschtools.com

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IN/FT

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IN/FT

GAM 270 MFL

IN/FT

90°= 0% = 0 IN/FT

12 IN/FT =

IN/FT

0°= 0%= 0 IN/FT

180°

10 s

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2 s

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10 s

180°

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Safety Rules for Laser Measures

Read all instructions. Failure to fol-

result in hazardous radiation exposure, electric shock, ﬁre and/or serious injury.

The term “laser measure” in the warnings listed below refers to your battery-operated (cordless) laser angleﬁnder/digital level.

SAVE ALL WARNINGS AND INSTRUCTIONS

The following label is on your laser measure for your safety. ALWAYS BE AWARE of its location when using the laser measure.

tion and complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007. This can lead to persons being blinded.

low all instructions listed below may

FOR FUTURE REFERENCE

DO NOT direct the laser beam at persons or animals and do not stare into the laser beam yourself. This laser measure produces class 2 laser radia-

DO NOT stare directly at the laser beam or project the laser beam directly into the eyes of others. Serious eye

injury could result.

DO NOT place the laser measure in a position that may cause anyone to stare into the laser beam intentionally or unintentionally. Serious eye injury could result.

DO NOT operate the laser measure around children or allow children to operate the laser measure. Serious eye

injury could result.

ALWAYS: Make sure that any bystanders in the vicinity of use are made aware of the dangers of looking directly into the laser measure.

Never aim the beam at a workpiece with a reﬂective surface. Bright shiny reﬂective sheet steel or similar reﬂective surfaces are not recommended for laser use.

Reﬂective surfaces could direct the beam back towards the operator.

Use of controls or adjustments or performance of procedures other than those speciﬁed herein may result in hazardous radiation exposure.

DO NOT use any optical tools such as, but not limited to, telescopes or transits to view the laser beam. Seri-

ous eye injury could result.

DO NOT leave the laser measure “ON” unattended in any operation mode. ALWAYS turn the laser measure “OFF” when not in use. Leaving the laser measure “ON”

increases the risk of someone inadvertently staring into the laser beam.

DO NOT operate the laser measure in combustible areas such as in the presence of ﬂammable liquids, gases or dust.

Do not use the laser viewing glasses as safety goggles.

The laser viewing glasses are used for improved visualization of the laser beam, but they do not protect against laser radiation.

Do not use the laser viewing glasses as sun glasses or in traﬃc. The laser viewing glasses do not aﬀord complete

UV protection and reduce color perception. ALWAYS position the laser measure securely. Damage to

the laser measure and/or serious injury to the user could result if the laser measure falls.

Take care to recognize the accuracy and range of the laser measure. Measurement may not be accurate if used

beyond the rated range of the laser measure.

DO NOT remove or deface any warning or caution labels. Removing labels increases the risk of exposure to

laser radiation.

Safety Rules for Angleﬁnders

When using the angle information provided by this tool to cut materials, always observe all of your saw’s instructions, including those for positioning and clamping the workpiece. In some cases, it may not be possible to set the required angles on a particular saw or type of saw, and an alternative means of performing the cut will need to be used.

For extremely acute (sharp) angles, it may be necessary to make the cut using a taper jig with a table saw or circular saw.

Electrical safety

Batteries can explode or leak, cause injury or ﬁre. To reduce this risk, always follow all instructions and warnings on the battery label and package.

DO NOT short any battery terminals. DO NOT charge alkaline batteries. DO NOT mix old and new batteries. Replace all of them

at the same time with new batteries of the same brand and type.

DO NOT mix battery chemistries. Dispose of or recycle batteries per local code. DO NOT dispose of batteries in ﬁre. Keep batteries out of reach of children. Remove batteries if the device will not be used for sev-

eral months.

Maintenance

DO NOT disassemble the angleﬁnder/digital level. There are no user serviceable parts inside. Disassembling the angleﬁnder/digital level will void all warranties on the product. Do not modify the product in any way. Modify-

ing the angleﬁnder/digital level may result in hazardous laser radiation exposure.

DO NOT use this angleﬁnder/digital level for any purpose other than those outlined in this manual. This

could result in serious injury.

ALWAYS use only the accessories that are recommended by the manufacturer of your angleﬁnder/digital level.

Use of accessories that have been designed for use with other angleﬁnder/digital levels could result in serious injury.

Repair and servicing must always be performed by a qualiﬁed repair facility. Repairs performed by unquali-

ﬁed personnel could result in serious injury.

Technical Data

Angle ﬁnder/Digital level GAM 270 MFL

Article number 3 601 K76 410 “HOLD” function ● “Simple Miter” Operating Mode ● “Compound Miter” Operating Mode ● “Grade Measurement” Operating Mode ● Display Illumination ● Calibration ● Measuring range 0°...270° Measuring accuracy angle ±0.1° Lowest indication unit 0.1° Operating temperature 14 °F...122 °F

Storage temperature -4 °F...158 °F

Alkaline Batteries 4 x1.5V LR6 (AA) Operating time approx.

Automatic switch-oﬀ after approx. 30 min Leg length 23.6 in (600 mm) Weight according to EPTA-Procedure

01/2003 Measuring range of grade measuring device

– 0°/90° – 1°–89°

Working range of laser

Vertical levelling accuracy of laser ±0.5 mm/m Horizontal levelling accuracy of laser ±1 mm/m Clearance of laser exit – bottom edge of

angleﬁnder/digital level Laser class 2 Laser type 650 nm, < 1 mW Laser beam diameter (at 25 °C) approx.

– at 5 m distance – at 10 m distance

Relative air humidity, max. 90 % Dimensions

(length x width x height) IP 54 (dust and splash proof) ●

(–10 °C...+50 °C)

(–20 °C...+70 °C)

50 h

3.3 lbs (1.5 kg)

±0.05°

±0.1°

100 ft (30 m)

1.2 in (30 mm)

0.1 in (3 mm)

0.3 in (8 mm)

26.9 x 2 x 2.4 in

(684 x 52 x 60 mm)

Operating duration without laser

The working range can be decreased by unfavorable

environmental conditions (e.g. direct sun irradiation). The angleﬁnder/digital level can be clearly identiﬁed

with the serial number 13 on the type plate.

Intended Use

The angleﬁnder/digital level is intended for measuring and transferring angles and for calculating simple and compound miter angles, checking and aligning horizontals and verticals. It is suitable for indoor and outdoor use.

Features

The numbering of the product features shown refers to the illustration of the angleﬁnder/digital level on the graphic page.

1 Fold-out leg 2 Viewing window for

display

3 Locking wheel 4 Base leg 5 Battery lid 6 Latch of battery lid 7 Display Angle measur-

ing device

8 Display Grade measur-

ing device

9 Spirit level for horizon-

tal alignment

10 Spirit level for vertical

alignment

11 Laser beam outlet

opening

Display elements

The numbering of the product features shown refers to the illustration of the angleﬁnder/digital level on the graphic page.

a “H” indicator for “HOLD” memory value b Battery indicator c Bevel angle indicator “BVL” d Miter angle indicator “MTR” e Corner angle indicator “CNR” f Spring angle indicator “SPR” g Reading Angle measuring device h/i Alignments arrows j Laser operation indicator k/m Unit of measure indicator n Measuring value Grade Measurement o Indicator for audio signal

12 Laser warning label 13 Serial number 14 “ON/OFF” button 15 “MTR1” button for

simple miter

16 “MTR2” button for

compound miter

17 “HOLD” button 18 On/Oﬀ button for laser

beam

19 Audio signal button 20 Calibration/change

units button

21 Leg extension 22 Protective pouch

Assembly

Inserting/Replacing the Batteries

Use alkaline (4 x AA) batteries to operate the angleﬁnder/ digital level.

Ensure polarity of each battery

correct battery polarity may cause ﬁre or personal injury. To open the battery lid 5, press on the latch 6 and fold the

battery lid up. Insert the batteries (Fig. A).

Battery Indicator

The battery indicator b always displays the current battery status:

The battery is over 90 % full The battery is between 60 % and 90 % full The battery is between 30 % and 60 % full The battery is between 10 % and 30 % full The empty battery indicator ﬂashes. The battery

level is under 10 %. Once the battery indicator begins ﬂashing, you can measure for approximately another 15-20 minutes until the tool shuts down.

Always replace all batteries at the same time. Do not use diﬀerent brands or types of batteries together.

Remove the batteries from the angle ﬁnder/digital level when not using it for longer periods. When storing for

longer periods, the batteries can corrode and self-discharge.

Slide the leg extension 21 onto the fold-out leg 1 from the front. Slide the leg extension as far as possible over the joint of the angleﬁnder/digital level.

matches the instructions in Fig. A. In-

Mounting the Leg Extension

Operation

Initial Operation

Protect the angleﬁnder/digital level against moisture and direct sun light.

Do not subject the angleﬁnder/digital

ations in temperature. As an example, do not leave it in

vehicles for a long time. In case of large variations in temperature, allow the angleﬁnder/digital level to adjust to the ambient temperature before putting it into operation. In case of extreme temperatures or variations in temperature, the accuracy of the angleﬁnder/digital level can be impaired.

severe exterior eﬀects to the angleﬁnder/digital level, it is recommended to carry out an accuracy check (see “Accuracy Check and Calibration of the Angleﬁnder/digital level”, page 22) each time before continuing to work.

must be clean. Protect the angleﬁnder/digital level against impact and shock. Debris particles or deforma-

tions can lead to faulty measurements.

Do not leave the switched-on angleﬁnder/digital level unattended and switch the angleﬁnder/digital level oﬀ after use. Other persons could be blinded by the laser

beam. Press the “ON/OFF” switch 14 to switch the angleﬁnder/

digital level on or oﬀ. If the “H” indicator lights up, the value from the last

measurement is still saved. This value can be deleted by brieﬂy pressing the “ON/OFF” button 14.

The angleﬁnder/digital level will shut down after approx. 30 minutes of inactivity to preserve battery life.

The angleﬁnder/digital level can be aligned horizontally with spirit level 9 and vertically with spirit level 10.

When you rotate the measuring device 180°, the display will also rotate automatically to make the displayed value easier to read.

After switching on, the angleﬁnder/digital level is always in normal measuring mode.

In “Normal Measuring” mode, angle measurement and grade measurement are carried out simultaneously.

Angle Measurement Operating Mode

The angleﬁnder/digital level is in the “Angle Measurement” operating mode every time it is switched on.

Measuring Angles (see ﬁgures C–D)

Place the fold-out leg 1 and the base leg 4 ﬂat on the surfaces around the angle you wish to measure. The measured angle value w will display on the display 7 as measured value c. The measured value will remain on the display until the angle between fold-out leg 1 and base leg 4 has changed.

Once you have your desired angle measurement (see Measuring Angles section), lock the position of the legs by tightening the locking wheel 3.

Place the angleﬁnder/digital level in the desired position against the workpiece. Use the legs as a straight edge to transfer the angle.

Press the “HOLD” memory button 17 to save the current measuring value. The a indicator will ﬂash on the display as conﬁrmation. The currently displayed value is frozen and will not change even when the leg is moved. If you press the “HOLD” memory button again, the a indicator will permanently be shown on the display. The displayed value will change if you move the legs. The previously frozen value is now saved in the background. If the “HOLD” memory button 17 is pressed again, the previously saved value is displayed and the a indicator ﬂashes.

The unit can only store one value at a time. Storing a new value will automatically overwrite the previously stored value.

level to extreme temperatures or vari-

Avoid heavy impact to or falling down of the angleﬁnder/digital level. After

The contact surfaces and contact edges of the angleﬁnder/digital level

Switching On and Oﬀ

Aligning with the Spirit Levels

Rotating the Display

“Normal Measuring Mode”

Transferring Angles (see ﬁgure E)

Save measured values

The held value is saved even when the angleﬁnder/digital level is switched oﬀ (manually or automatically). However, it is deleted when changing batteries or when the batteries are empty.

Measuring with Leg Extension (see ﬁgures G–H)

The leg extension 21 enables angle measurement when the contact surface is shorter than the fold-out leg 1.

Place the base leg 4 and the leg extension ﬂat on or against the edges to be measured.

The reading of the angle w between base leg and fold-out leg is indicated in the display. The required angle v be- tween base leg and leg extension is calculated as follows:

v = 180° – w

“Simple Miter”Operating Mode

The “Simple MTR” operating mode is used to determine miter angles for miter cuts that are made with the blade vertically perpendicular to the workpiece; in other words, miter cuts for which the bevel setting is set at 0°. Such applications include mitering baseboard and chair rail, picture rails, door frames, staircase balusters, and picture

The “Simple Miter” operating mode is activated by pressing the “MTR1” button. The displayed value is always used for the calculation of the “MTR”. If a saved value is being displayed (indicator a ﬂashes), the calculation will be performed with the saved value regardless of the position of the legs.

When workpieces are to be ﬁtted into a corner (e.g. for ﬂoor trimmings), measure the corner angle x° by applying the fold-out leg and the base leg. For given angles (e.g. picture frames), open the fold-out leg and the base leg until the desired angle is indicated in the display.

MTR

The miter angle “MTR”, by which the two workpieces are to be shortened, is calculated. For these miter cuts, the saw blade is vertical to the workpiece (the bevel angle is 0°).

MTR

Press button 15. The calculated horizontal miter angle “MTR”, which has to be set on the chop and miter saw,

and the “MTR” indicator will be shown on the display. Press the “MTR1” button 15 to return from the “Simple

Miter” operating mode to the “Angle Measurement” operating mode.

Pressing the “ON/OFF” button will also take you back to the “Angle Measurement” operating mode.

Note: The calculated miter angle “MTR” can only be tak- en over for chop and miter saws, for which the setting for vertical cuts is 0°. When the setting for vertical cuts is 90°, the angle for the saw must be calculated as follows:

90° – indicated “MTR” angle = angle to be set on the saw.

“Compound Miter” Operating Mode

The “Compound MTR” operating mode is used to easily determine the miter and bevel angles needed to create precision joints at compound angles. This is particularly useful when cutting crown molding laid ﬂat on a compound miter saw.

The “Compound Miter” operating mode is activated by pressing the “MTR2” button.

Carry out the worksteps exactly in the given sequence.

“1. SPR”: Storing the Spring Angle

SPR

To start “Compound Miter” calculation: – Open the fold-out leg and base leg until the desired

spring angle is shown on the display.

– Measure the spring angle if it is unknown. To

do so, place the workpiece you want to measure between the fold-out leg and the base leg. If measurement is not possible with the angleﬁnder/ digital level on especially narrow or small workpieces, use auxiliary equipment, e.g. a bevel, and then set the angle on the angleﬁnder/digital level.

– To use a saved “HOLD” value (indicator a is static on

the display), press “HOLD,” previously saved angle will ﬂash. Press “MTR2” and held angle will blink twice with “SPR” indicator ﬂashing. Continue with step 2 below.

When the angle is greater than 90° yet less than 180° when pressing button 16, the “SPR” spring angle is automatically converted as follows:

“SPR” = 180° – measured or set angle.

“2. CNR”: Storing the Corner Angle

SPR

CNR

To measure the corner angle, place the fold-out and base legs ﬂat against the walls and read the measured corner angle or set a known corner angle on the angleﬁnder/ digital level.

“3.MTR”: Calculating the Miter Angle

MTR

Press button 16 again. “MTR” and the calculated miter angle for the chop and miter saw are indicated on the display.

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