PRESIDIUM PGCG User Handbook Manual

1

2

Language Contents

1. English Language pg. 03

2. Chinese Language pg. 35

3. French Language pg. 66

4. German Language pg. 102

5. Italian Language pg. 139

6. Russian Language pg. 176

7. Spanish Language pg. 221

3

Contents

(English Version)

I. Disclaimers, Exclusions and Limitations
of Liability pg. 04

II. About this book pg. 05

III. About your Presidium Gem Computer
Gauge pg. 06

IV. IMPORTANT NOTICE pg. 10

1. GETTING STARTED with your Presidium
Gem Computer Gauge pg. 12

2. PERFORMING A TEST with your
Presidium Gem Computer Gauge pg. 13

a. Measurement
b. Weight Estimator
c. S.G. Dictionary
d. Gemstone Estimator
e. Calculator
f. Inventory
g. PC connectivity

3. READING TEST RESULTS with your
Presidium Gem Computer Gauge pg. 32

4. TAKING CARE of your Presidium Gem
Computer Gauge pg. 34

4

PLEASE READ AND NOTE PRESIDIUM WARRANTY
TERMS AND CONDITIONS as stated in the warranty
card. Presidium warranty for its testers are subject to
proper use by its users in accordance with all the terms
and conditions as stated in the relevant user handbook
and shall cover only manufacturing defects.

Due to continuous product improvement, Presidium
reserves the right to revise all documents including the
right to make changes to the handbook without notice
and without obligation to notify any person of such
revisions or changes. Users are advised to check
Presidium’s website http://www.presidium.com.sg/ from
time to time.

Presidium shall not be responsible for any damage or
loss resulting from the use of this gauge or handbook,
and under no circumstances shall Presidium, its
manufacturer or any of its subsidiaries, licensors,
distributors, resellers, servants and/or agents be liable for
any direct or indirect damages, resulting from the use of
this gauge.

TO THE MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, under no circumstances shall
Presidium, its manufacturer or any of its subsidiaries,
licensors, distributors, resellers, servants and/or agents
be responsible for any special, incidental, consequential
or indirect damages howsoever caused.

The gauge or Presidium Gem Computer Gauge (PGCG)
referred to in this handbook is provided and/or sold on
an “as is” basis. Except as required by applicable law,
no warranties of any kind, either expressed or implied,
including, but not limited to, the implied warranties of

merchantability and tness for a particular purpose.

I. Disclaimers, Exclusions and Limitations of
Liability

5

II. About this book

Thank you for purchasing the Presidium Gem Computer
Gauge (“PGCG” or “gauge”).

This handbook is designed to help you set up your gauge
and describes all you need to know about how to use
your gauge accurately and take care of it in line with its
requirements. Please read these instructions carefully
and keep them handy for future reference.

This book also contains the terms and conditions in
relation to the use of the gauge including the

Disclaimer, Exclusion and Limitation of Liability
clauses stated above in Section I.

6

The Presidium Gem Computer Gauge has been
developed as an extension to the existing Presidium
Electronic Gemstone Gauge with additional features to
perform more functions, including:

• Measures actual gemstone dimensions and

estimates gemstone weight and identity

• Measures 74 gemstones and 9 different shapes

• Accurate measurement up to 0.01mm

• Direct carat conversion for round brilliant cut

diamonds

• Clear and visible display for ease of reading

measurements

• Light and portable instrument that can be used

anywhere

• PC connectivity for ease of importing and printing

measurement results

Product specications:

Measurement range: 0.00mm to 25.00mm or 0.000ct to

57.343ct
Recommended battery: CR 2450 3V or equivalent
Battery lifespan: generally about 26 hours of continuous
usage

Included in your package:

• Presidium Gem Computer Gauge

• CR-2450 3V battery

• High setting jewelry attachment

• Mini CD ROM

• USB Cable

• User handbook

• Warranty card

• Protective box

IIl. About your Presidium Gem Computer Gauge

7

1 LCD Display

2 Base Anvil

3 Wedge-shaped Points

4 Slider

5 Slider Platform

6 Protruding Probe

7 Jewelry Attachment

8 Battery Compartment

9 USB Cable

10 USB Port

11 Selection Keypad

12 Mode Button

13 Clear Button

14 Enter Button

15 Navigation Button

16 Calculator Activation Button

17 Unit Conversion Button

Gauge parts

8

Display Conguration

The LCD display of PGCG is generally divided into three
sections.

1. Interactive display

2. Scroll bar

3. Instruction bar

Keypad Conguration

Please refer to table below for the function of each key
on the selection keypad. Some keys will have more than
one function.

Front View

9

Name Normal Function Additional

Function

1 Carat

mm

Press to change
measurement unit
between millimeter
(mm) and carat (Ct)

In “Weight
Estimator” and
“Stone
Estimator”
mode, press
to toggle
between
“Measure­ment” and
“Keypad” to
input
dimension

2 Mode Press to display the

function selection
menu

3 Cancel Press to delete

items

• Press to

turn on
PGCG

• In ‘Mea

surement”
mode,
press
for tare/
zero
function

4 Calcula-

tor

Press to activate
calculator mode

In “Weight
Estimator”
mode, press
for price
calculation

5 Enter Press to conrm

selection

6 Naviga-

tion
keypad

Press to navigate
data in interactive
display

10

• Keep the gauge dry. Precipitation and all types of

liquids or moisture can contain minerals that will
corrode electronic circuits. If your tester does get wet,
remove the battery, and allow the tester to dry
completely before replacing it.

• Do not use, store or expose the gauge in dusty and

dirty areas. Its moving parts and electronic
components can be damaged.

• Do not use, store or expose the gauge in hot areas.

High temperatures can damage or shorten the life of
tester, damage batteries, and warp or melt certain
plastics.

• Do not use, store or expose the gauge in cold areas.

When the tester returns to its normal temperature,
moisture can form inside the tester and damage
electronic circuit boards.

• Do not attempt to open the gauge other than as

instructed in this handbook.

• Do not drop, knock, or shake the gauge. Rough
handling might break internal circuit boards and ne

mechanics.

• Do not use harsh chemicals, cleaning solvents, or

strong detergents to clean the gauge.

• Do not paint the gauge. Paint can clog the moving

parts and prevent proper operation.

IV. IMPORTANT NOTICE

11

If the gauge is not working properly, kindly contact
Presidium Customer Service at [e-mail].
sg or:

Presidium Instruments Pte Ltd
No. 6 Penjuru Lane
Singapore 609187
Singapore
(65) 6379 5000
Attn: Customer Service Executive

12

1. Pull the battery slider sideway outward using either

ngernail or screw driver.

2. Place a CR 2450 3V battery with the (+) sign facing
upward in the battery compartment and close by
pushing the battery slider sideway inward.

3. The use of alkaline batteries is preferred, as it should
generally give approximately two and a half hours of
continuous operation, while the use of ordinary
batteries will give a shorter working life.

Turning on your Presidium Gem Computer Gauge

1. Press the “C” button on the selection keypad.

2. The word “Presidium” will appear and the device will
automatically go to “Measurement” mode.

3. The screen will display two lines; the rst being

measurement in millimeter unit and the second line
being measurement in carat unit.

Please note that the PGCG will automatically shut down
after 5 minutes of inactivity.

Battery information

Do not leave worn out batteries in the battery
compartment as the batteries may corrode, leak or
damage the gauge. Batteries should be removed when
the instrument is expected to be stored for an extended
period of time.

1. GETTING STARTED with your Presidium Gem
Computer Gauge

Inserting a battery into your Presidium Gem
Computer Gauge

13

1. By default, upon power up, the device will be in
“Measurement” mode.

2. PGCG comes with the following functions:
a) Measurement
b) Weight Estimator
c) S.G. Dictionary
d) Gemstone Estimator
e) Calculator
f) Inventory
g) PC connectivity

3. To use other functions, press “Mode” on the
selection keypad and choose a function from the
list.

a. Measurement

2. PERFORMING A TEST with your Presidium Gem
Computer Gauge

Requirement Activation Key Display

1 Upon turning on,

PGCG will dis­play dimension in
mm and weight in
Carat:

1. Press “C” to
turn on

0.00 mm

0.000 ct

2 For display of

dimension in mm
only:

1. Press “Ct/
mm”

0.00 mm

3 For display of

weight in Carat
only:

1. Press “Ct/
mm”

0.000 ct

14

• The Presidium Gem Computer Gauge should be held

in the palm of either hand. Control the slider with the
thumb.

• When measuring loose stones, pull the Slider and

place the stone on the Slider platform. The base of
the stone should be parallel to the platform to prevent
it from moving.

• When measuring mounted stones, insert the jewelry

attachment to the gauge and place the stone
between the jewelry attachment and slider anvil.

15

• Press “ct/mm” to alternate between the following

displays:

1. Display of both dimension in mm and weight in
carat (by default)

2. Display of dimension in mm only

3. Display of weight in carat only

The default setting of Presidium Gem Computer
Gauge (PGCG) is programmed for American
Standard Round Brilliant Cut

For other gemstones of other shapes, please
directly proceed to the following steps.

b. Weight Estimator

Presidium Gem Computer Gauge (PGCG) estimates the
weight of the gemstone from the shape, diameter, depth
and nature of the gemstone.

The different shapes of gemstones as shown in diagram
below:

• Slowly close the Slider. The reading will be displayed

on the window immediately.

16

Requirement Activation

Key

Display

1. Select Weight
Estimator:
Select Mode

Scroll to Weight
Estimator

Press “ENT” to

conrm

2. Select New or
Previous Set
ting:
Scroll to select

Press “ENT” to

conrm

[SELECT SETTING]

New Setting

Previous Setting

Round

Marquise

Cushion

Oval

Heart

Square

Emerald

Pear

Cabochon

[MODE]

Measurement

Weight Estimator

S.G. Dictionary

17

3.1 New Settings

Select Gem
stone name:

Scroll to select
gemstone
name by the

rst alphabet.

Press “ENT” to

conrm

Select a Gem
stone:

Scroll to select

Press “ENT” to

conrm

Select a Shape:
Scroll to select

Press “ENT” to

conrm

Note: The different
dimensions to be
input depend on
the shape of the
gemstone. Please
refer to Page 16
for shape and
their respec­tive dimensions
required.

3.2 Previous Settings

Setting of previ­ous gemstone will
be displayed:

• Press “ENT”
to conrm

[SELECT NAME]

A B C D E F
G H I J K L
M N O P Q R

[SELECT STONE]

Diamond

Danburite
Diopside

[SELECT SHAPE]

Round

Oval
Emerald

[PREV. SETTING]

Diamond
Round

18

4 Select method

of measure
ment:
Scroll to select
from measure
ment or keypad

Press “ENT” to

conrm

4.1 Measurement

Measurement of
Diameter:

• Place gem

stone’s
diameter on
base anvil

• Press “ENT”
to conrm

Measurement of
Depth:

1. Place gem
stone’s depth
on base anvil

2. Press “ENT”

to conrm

4.2 Keypad

Keying of
Diameter:
Key in gem
stone’s
diameter

To conrm

entry,
navigate
cursor to
and press
“ENT”

[SELECT INPUT]

Measurement
Keypad

[MEASURE]

0 1 2 3 4 5
6 7 8 9 .
Dep.= 3.11 mm

CT/MM

[MEASURE]

0 1 2 3 4 5
6 7 8 9 .
Dia .= 4.55 mm

CT/MM

[KEY IN]

0 1 2 3 4 5
6 7 8 9 .
Dia .= 4.55 mm

CT/MM

19

Keying of
Depth:
Key in gem
stone’s depth

To conrm

entry,
navigate
cursor to
and press
“ENT”

Please note that
at any point,
pressing Ct/mm
will toggle
between
“Keypad” or
“Measurement”
input methods

5. Summary of gem­stone’s diameter
and depth.

• Press “ENT” to
conrm

6. Estimated weight
of gemstone will
be displayed. At
this point, user
can either press
“Ent” to store or
“Cal” for price
calculation.
Details will be
given in 6.1 and

6.2 below

[KEY IN]

0 1 2 3 4 5
6 7 8 9 .
Dep.= 3.11 mm

CT/MM

[SUMMARY P1]

Dia . = 4.55 mm
Dep. = 3.11 mm

[SUMMARY P2]

Diamond
Round
weight = 0.299 ct

CAL

20

6.1 Storing Data

Storing of data
into inventory:

Press “ENT” to
store data

Scroll to select
“YES/NO”

If user selects
“NO”, display
will return to
“Select Setting”
for next
measurement.
User will have
the liberty to
choose
between
previous or
new
stones setting.

Press “ENT” to

conrm

[SAVE STONE?]

No

Yes

[SELECT SETTING]

New Setting

Previous Setting

21

6.2 Price Calculation

Price calculation
of gemstone:

• Press “CAL”

Keying of price:
For data entry,
navigate
cursor to
selected data
and press
“ENT”

To conrm

price per carat,
navigate cursor
to and
press “ENT”

Price of
gemstone will
be displayed

6.1 Storing Data

If user selects
“YES”, details
of gemstone
will be stored in
“Inventory”

Press “ENT” to

conrm

Upon storing of
data, display will
return to “Select
Setting” for next
measurement.
User will have
the liberty to
choose between
previous or new
stones setting.

[RECORD]

Stone No. 1/16

[ENTER PRICE/CT]

0 1 2 3 4 5

6 7 8 9 .
$/ct. =

[ENTER PRICE/CT]

0 1 2 3 4 5

6 7 8 9 .
$/ct. = 2000

[PRICE]

Diamond
Weight = 0.299 ct
$ 598

22

6.2 Price Calculation

Storing of data
into inventory:

• Press “ENT”

to store data

• Scroll to

select “YES”
in option to
store

• Press “ENT” to
conrm

• Upon storing of

data, display
will return to
“Select Setting”
for next
measurement

Please note only
the settings of
the stone are
stored. Storing
function is simi­lar to section 6.1
above. Price of
the gemstone
will not be
stored.

[SAVE STONE?]

No

Yes

23

c. Specic Gravity (S.G.) Dictionary

Presidium Gem Computer Gauge enables the
narrowing down of a gemstone by its S.G. Presidium

Gem Computer Gauge (PGCG) includes a dictionary for
S.G. values of selected gemstones for your reference.

Please note that the weight of gemstone will be needed

from other source for the identication of gemstone.

Requirement Activation

Key

Display

1. Select S.G.

Dictionary:

Select Mode

Scroll to S.G.
Dictionary

Press “ENT” to

conrm

2. Select Gem
stone name:

Scroll to select
gemstone
name by the

rst alphabet

Press “ENT” to

conrm

3. Select Gem
stone:

Scroll to select

Press “ENT” to

conrm

[MODE]

Measurement
Weight Estimator

S.G. Dictionary

[SELECT NAME]

A B C D E F
G H I J K L
M N O P Q R

[SELECT STONE]

Diamond

Danburite
Diopside

24

4. S.G. value of
selected
gemstone will be
displayed

d. Gemstone Estimator

In order to determine the S.G. of the gemstone to be

tested:

Requirement Activation

Key

Display

1. Select

Gem stone

Estimator:

Select Mode

Scroll to Gem
stone
Estimator

Press “ENT” to

conrm

[S.G. VALUE]

Diamond
S.G. = 3.52

3.51 - 3.53

[MODE]

Weight Estimator
S.G. Dictionary

Gemstone Estimator

25

2. Select a Shape3:

Scroll to select

Press “ENT” to

conrm

3

Please refer
to Page 16 for
the picture il­lustrations of the
shapes.

4

The different
dimensions to
be input depend
on the shape of
the gemstone.
Please refer
to Page 16 for
different shapes
and their respec­tive dimensions
required.

3. Select method
of measurement:

Scroll to select
from measure
ment or
keypad

Press “ENT” to

conrm

[SELECT SHAPE]

Round

Oval
Emerald

[SELECT INPUT]

Measurement
Keypad

26

3.1 Measurement

4

Measurement of
Diameter

• Place gem

stone’s
diameter on
base anvil

• Press “ENT”
to conrm

Measurement of
Depth:

• Place gem

stone’s depth
on base anvil

• Press “ENT”
to conrm

3.2 Keypad

Keying of
Diameter:

Key in gem
stone’s
diameter

To conrm

entry, navigate
cursor to
and press
“ENT”

[MEASURE]

0 1 2 3 4 5
6 7 8 9 .
Dia .= 4.55 mm

CT/MM

[MEASURE]

0 1 2 3 4 5
6 7 8 9 .
Dep.= 3.11 mm

CT/MM

[KEY IN]

0 1 2 3 4 5
6 7 8 9 .
Dia .= 4.55 mm

CT/MM

27

4 Keying of weight:

Key in gem
stone’s weight

To conrm

entry, navigate
cursor to
and press
“ENT”

3.2 Keypad

Keying of Depth:

Key in gem
stone’s depth

To conrm

entry, navigate
cursor to
and press
“ENT”

Please note
that at any
point, pressing
Ct/mm will
toggle between
“Keypad” or
“Measurement”
input methods

[KEY IN]

0 1 2 3 4 5
6 7 8 9 .
Dep.= 3.11 mm

CT/MM

[KEY IN]

0 1 2 3 4 5
6 7 8 9 .
Weight.= 0.494 ct

28

5 S.G. value of

gemstone will be
calculated. List
of gemstones5
with associated
SG value will be
displayed

5

Please refer to

Page 32-33 for

the list of gem­stones included
in PGCG

e. Calculator

Presidium Gem Computer Gauge (PGCG) also allows
you to do simple calculations.

Requirement Activation

Key

Display

1. Select

Calculator:

Select Mode

Scroll to
Calculator

Press “ENT” to

conrm

Alternatively,
press “CAL”
to select
Calculator

2. Calculation:

• For data entry,

navigate
cursor to
selected data
and press
“ENT”

1. Diamondor

2. Glass

3. Lapis lazuli
S.G. = 3.51

[MODE]

S.G. Dictionary

Gemstone Estimatort

Calculator

0 1 2 3 4 5

6 7 8 9 . =
+ -

%

0

0 1 2 3 4 5

6 7 8 9 . =
+ -

%

0

29

f. Inventory

Presidium Gem Computer Gauge (PGCG) allows you
to store details (e.g., identify of gemstone, shape, and
weight) of gemstones for reference.

Requirement Activation

Key

Display

1. Select

Inventory:

Select Mode

Scroll to
Inventory

Press “ENT”

to conrm

2. All gem
stones stored
in memory will
be listed

3. Select gem
stone’s
details:

Scroll to
select

Press “ENT”

to conrm

[MODE]

Gemstone Estimatort
Calculator

Inventory

[SELECT STONE]

1. Ambert

2. Diamond

3. Opal

C

[STONE DETAIL]

2. Diamond
Oval
Weight = 6.23 ct

C

30

Deletion of all
gemstone’s

details:

Scroll to any
gemstone
record

Press “ENT”

to conrm

4 Deletion of

selected
gemstone’s

details:

Scroll to
selected
gemstone
record that
you want to
delete

Press “ENT”

to conrm

• Press “C” to

delete

Select
“Delete” from
deletion
option and
press “ENT”

to conrm

Select “Yes”
and press
“ENT’ to

conrm

[SELECT STONE]

1. Ambert

2. Diamond

3. Opal

C

[DELETE OPTION]

Delete

Delete all

[DELETE STONE?]

No

Yes

[STONE DETAIL]

1. Ambert

2. Diamond

3. Opal

C