Niigata seiki JLVC-30 User manual

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 cm
0.05mm
01234567890
Position measured object between these surfaces.
Measures external dimensions.
Move Slide to open and close.
①Outside Meas. Surfaces···
②Outside Jaws················
Measures the height of steps.
Measures internal dimensions.
Move Slide to open and close.
Position surfaces inside object to be measured.
Locks the Slide.
Tighten to use Fine Adjustment Feed Wheel.
Indicates measured value in 1mm graduations.
Feed screw for fine adjust of Slide.
Scale for measuring with a resolution of 0.05mm.
Refer to following page for usage instructions.
③Step Meas. Surfaces ··
④Inside Jaws·············
⑤Inside Meas. Surfaces ·
⑥Lock Screw·············
⑦Fine Adjust Lock ·····
⑧Main Scale ·············
⑨Fine Adjust Feed ·····
⑩Slide (Vernier Scale) ···
Precision Measuring Tools
JLVC-30/JLVC-60
Model
No.
INSTRUCTION MANUAL
Thank you for purchasing the Niigata Seiki Long Jaw Caliper.
This product is a precision measurement tool with a main scale and a vernier scale to indicate the measured value.
●For safe and correct use of this product, please read this instruction manual before use and follow the procedures described.
Please keep manual where it is accessible to user for future reference.
●Keep this manual with the instrument if transferred or leased to a third party.
●For inquiries about this product please contact dealer or Niigata Seiki at the address listed on the following page.
■
SAFETY PRECAUTIONS Please Observe
To prevent injury to yourself and others, and to prevent damage to property,
always follow the procedures marked with the following symbols.
Read the manual and follow the directions.
・Use of product other than as described in the manual
may cause accident.
Use only for measuring.
・Use for any purpose other than measuring may damage
or wear the instrument. Improper use may also cause accident.
Use only in suitable environment.
・Do not use in locations that are very humid, wet, very
hot, cold, or in direct sunlight.
・Due to large size and weight, please use care and be
aware of your surroundings during use.
WARNING: Indicates risk of personal injury or property damage if not followed.
Denotes a prohibition –
You MUST NOT do
Denotes a requirement –
You MUST do
Handle with Care.
②Outside Jaws
③Step Meas.
Surfaces
PART IDENTIFICATION & FUNCTION
④Inside Meas.
Surfaces
⑩Slide (Vernier Scale)
⑥Lock Screw ⑦ Fine Adjust Lock
④Inside Jaws
CALIBRATION
●To maintain instrument accuracy, periodic calibration is
recommended.
Wear of measuring surfaces from repeated use may affect accuracy
and periodic accuracy checks should be performed.
Outside Japan,
Please inquire contact distributor or place of
purchase to inquire about calibration services.
※ For Fine Adjustment, Loosen Lock Screw ⑥, and tighten
Fine Adjust Lock ⑦. Rotate Fine Adjust Feed Wheel ⑨.
LONG JAW CALIPER
Do not disassemble or modify.
Jaw Tips Are Sharp — Handle With Care.
・Careless handling may cause injury.
・Do not remove the vernier slide, Please do not attempt to
disassemble or modify as it may cause damage or poor
accuracy.
・Do not drop or subject instrument to excessive shock.
Do not place under heavy objects. Improper handling
may cause damage or poor accuracy.
・ Do not scratch instrument, for example by writing ID number.
⑨Fine Adjust
Feed
①Outside Meas.
Surfaces
⑧Main Scale

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16 17 18 19
0.05mm
0 1 2 3 4 5 6 7 8 9 0
0
1 2 3 4 5
0.
0 1 2 3 4 5 6 7 8 9 0
5
6 7 8 9 10 11 12 13
14 15 16
01234567890
5
6 7 8 9 10 11 12 13
14 15 16
01234567890
5
6 7 8 9 10 11 12 13
14 15 16
01234567890
PREPARATION FOR USE
Before using the caliper, follow the steps below:
READING THE SCALE
The measured value is determined by reading the main scale,
and then adding the Vernier Scale reading determined by the
position where the vernier and main scale graduations align.
PREVENTING ERRORS
In order to prevent measurement error, please note the following.
AFTER USE CARE ・ STORAGE NOTES
I398K 1909
●Material: Stainless Steel
JLVC-30
300mm
±0.08mm
JLVC-60
600mm
±0.10mm
0.05mm
Model
Max Meas. Length
Resolution
Accuracy
SPECIFICATIONS
●Wipe slide, measuring surfaces, and exterior with a dry
cloth to remove any dirt or oil.
When not in use, apply anti-corrosive treatment or protect
with anti-corrosive paper
●When not in use, keep jaws slightly open.
If stored with jaws closed, thermal expansion may create
excessive forces and affect accuracy.
●Store in supplied case in a cool, dry location.
Store away from moisture or direct sunlight, and out of reach
of unauthorized personnel.
●EXAMPLE 1
Measured Value = Main Scale + Vernier Scale Reading
77
0.00＋
77.00
Reading
77
0.30＋
77.30
Reading
77
0.35＋
77.35
Reading
Value: 77.00㎜
Main Scale
（1㎜）
Vernier Scale
（0.05㎜）
●EXAMPLE 2 Value: 77.30㎜
（1㎜）
（0.05㎜）
●EXAMPLE 3 Value: 77.35㎜
（1㎜）
（0.05㎜）
POSITIONING CALIPER
＜Flat surfaces ＞
Position the caliper
perpendicular to the
surfaces to be measured.
＜Cylindrical surfaces ＞
Position the caliper
perpendicular to the axis of
of the cylinder.
VIEWING THE SCALE
Due to the large size and weight of the instrument, if not well
supported during use the body may deflect and introduce
measurement error.
We recommend use by more than one person during measurement
for proper support.
Scale should be read from
directly above the calipers.
Due to change in height of
vernier scale relative to
main scale, if viewing
direction is not directly
above the reading may
have parallax error.
Measured
Object
Jaw
Check alignment
●Do not apply excessive force to Slide.
Moving the Slide with excessive force may cause damage and measurement error.
●Wipe off rust proofing and dirt from measuring surfaces and slide.
Contamination of surfaces may cause measurement error.
●Allow the caliper and object to be measured time to reach the same
temperature.
A temperature difference between the object to be measured and the caliper may
cause measurement error. Allow enough time for the temperatures to equilibrate.
●Performing an accuracy check.
①Jaw Alignment
In closed position, make sure the measuring surfaces on the outside jaws
align properly and there is no gap (no light should leak past.)
②Confirm “0” points on scale (see diagram at right)
With jaws closed as in step ① above, make sure the reading is zero and
the vernier scale graduations align at the “0” and “39” positions as shown.
Main Scale
Vernier Scale
Main Scale
Vernier Scale
PREVENTING DEFLECTION
Niigata Seiki Co.
, Ltd.
5-3-14, Tsukanome, Sanjo, Niigata, Japan, 955-0055
[phone] FAX : [phone]
MAIL: [e-mail]
URL: http://www.niigataseiki.co.jp