Niigata seiki TVC-15S Instruction Manual

PRECISION
VERNIER CALIPERS
MEASURING TOOLS
Thank you for purchasing the VERNIER CALIPERS.
This product is a precision measurement tool with a main scale and a vernier scale to indicate the measured value.
Carbide tipped measuring surfaces for scribing steel and hardened surfaces.
●For safe and proper 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 distributor or place of purchase.
■PART IDENTIFICATION AND FUNCTION
⑤Measuring surfaces for internal measurements
④Inside Jaws
③Measuring surfaces for
step measurements
②Outside Jaws
①Measuring surfaces for
outside measurements
①Measuring Surfaces for outside measurements ...
②Outside Jaws ................................................
③Measuring surfaces for step measurements ......
④Inside Jaws...................................................
⑤Measuring surfaces for internal measurements ...
⑥Lock Screw ...................................................
⑦Main Scale ...................................................
⑧Depth Bar ...................................................
⑨Measuring surfaces for depth measurements ......
⑩Thumb Knob ................................................
⑪Vernier Slide ( Vernier Scale ) ...........................
SAFETY PRECAUTIONS
Always follow the proper operating procedures in order to prevent
harm to yourself or others, and to prevent damage to property.
WARNING
Indicates risk of personal injury or property damage if not followed.
Read the manual and follow the instructions.
・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.
Handle with Care.
・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.
CALIBRATION
●In order to maintain instrument accuracy, it is recommended that
accuracy is confirmed through calibration on a periodic basis.
Wear of measuring surfaces from repeated use may affect accuracy and
periodic accuracy checks should be performed.
INSTRUCTION MANUAL
Model No.
⑥Lock Screw
⑦Main Scale
⑩Thumb Knob
⑨Measuring surfaces for
depth measurements
⑪Vernier Slide ( Vernier Scale )
Object to be measured is positioned between these surfaces.
Measures extremal dimensions. Move Slide to open and close.
Measures the height of steps.
Measures internal dimensions. Move Slide to open and close.
Position surfaces inside object to be measured.
Locks the Vernier Slide position.
Indicates measured value in 1mm graduations.
Bar for measuring depth. Bar moves in and out with Vernier Slide.
Depth is measured between these two surfaces.
Position thumb on knob for precise control of vernier slide.
Scale for measuring with a resolution of 0.05mm.
Refer to following page for usage instructions.
Please Observe
Denotes a prohibition Denotes a requirement
-You MUST NOT do -You MUST do
Use in proper environment.
・Please do not use instrument in rain or locations with
excessive humidity. Do not use at extreme high or
low temperatures. Keep out of direct sunlight.
Jaw Tips are sharp - Handle with care.
・Careless handling may cause injury.
Do not move the Vernier slide without pressing
Thumb Knob.
・Excessive force applied to Slide may cause damage
or affect accuracy.
Do not disassemble or modify.
・Do not remove the vernier slide, Please do not
attempt to disassemble or modify as it may cause
damage or poor accuracy.
We provide calibration services.
Please contact agent in country of
purchase to make arrangements.
PREPARATION FOR USE
TVC-15S
Before using the caliper, follow the steps below:
●Do not apply excessive force to Vernier Slide.
Pushing against slide, or attempting to move without pressing
the Thumb Knob may cause damage or inaccuracy.
●Wipe off any corrosion, dirt or oil 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
⑧Depth Bar
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 below )
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.
③Depth Confirmation
Position caliper on a flat surface for depth measurement.
Reading should be "0" as in step ② above, with the vernier
graduations aligned at the "0" and "39" positions.
HOW TO USE
●Scribing
① Loosen the lock screw, and open the Jaw the required amount .
②Lock the position by tightening the Lock Screw.
③Hold the Jaws as shown in the diagram below and scribe the
workpiece.
AFTER USE CARE, STORAGE NOTES
●As required, wipe slide and measuring surfaces with a dry cloth
treated with anti-corrosive oil. When not in use, apply
anti-corrosive treatment or keep in anti-corrosive bag.
●When not in use, keep jaws slightly open to prevent thermal
expansion from creating excessive forces on jaws and affecting
accuracy.
●Store in supplied case when not in use in a cool, dry location.
READING THE SCALE
The measured value is determined by reading the main scale,
and then adding the Vernier Scale reading as determined by
the position where the vernier and main scale graduations align.
Measured value = Main Scale Reading + Vernier Scale Reading
●EXAMPLE１
Measured Value: 73.00㎜
Main Scale
( 1mm )
Vernier Scale
( 0.05mm )
●EXAMPLE２
Measured Value: 73.50㎜
Main Scale
( 1mm )
Vernier Scale
( 0.05mm )
●EXAMPLE３
Measured Value: 73.55㎜
Main Scale
( 1mm )
Vernier Scale
( 0.05mm )
PREVENTING ERRORS
In order to prevent measurement error, please note the following.
POSITIONING CALIPER ON OBJECT
＜Flat surfaces＞
When measuring features
with flat surfaces, make sure
Proper alignment
the measuring surface of the
jaws are parallel to the
surfaces to be measured.
＜Cylindrical surfaces＞
When measuring cylindrical
features, make sure the
caliper jaws are
perpendicular to the cylinder
axis as shown.
VIEWING THE SCALE
Scale should be read from
directly above the calipers.
Due to step in height of
vernier scale relative to main
scale, if viewing direction is
not directly above the reading
may have parallax error.
Workpiece SPECIFICATIONS
●Material : Stainless Steel
●Measuring Range : 150mm
●Resolution : 0.05mm
●Maximum permissible error : ±0.05mm
●Weight : 150g
Reading
7 3
＋
0. 0 0
7 3 . 0 0
Reading
7 3
＋
0. 5 0
7 3 . 5 0
Reading
7 3
＋
0. 5 5
7 3 . 5 5
Jaw
Object being measured
Niigata Seiki Co., Ltd.
5-3-14, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-33-5522 Fax. : +81-256-33-5518
MAIL intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp