Niigata seiki TVC-60 Instruction Manual

PRECISION MEASURING TOOLS
VERNIER CALIPERS
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.
●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
⑤ Measuring surfaces for internal measurements
⑥ Lock Screw
④ Inside Jaws
③ Measuring surfaces for
step measurements
② Outside Jaws
① Measuring 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 ...................................................
⑧Thumb Knob ................................................
⑨Vernier 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 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.
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
TVC - 60/ TVC - 100
Model No.
⑦ Main Scale
⑧ Thumb Knob
⑨Vernier 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.
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 Sharp̶Handle With Care.
・Careless handling may cause injury.
Do not move the Vernier Slide when the Lock Screw
is tightened.
・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
Before using the caliper, follow the steps below: Before using the caliper, follow the steps below:
●Loosen the lock screw. ●Loosen the lock screw.
Moving the vernier slide with the lock screw tightened may cause excessive force to the slide which will damage the caliper and affect Moving the vernier slide with the lock screw tightened may cause excessive force to the slide which will damage the caliper and affect
accuracy. accuracy.
●Wipe off any corrosion, dirt, or oil from measuring surfaces and slide. ●Wipe off any corrosion, dirt, or oil from measuring surfaces and slide.
Contamination of surfaces may cause measurement error. Contamination of surfaces may cause measurement error.
●Allow the caliper and object to be measured time to reach the same temperature. ●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 A temperature difference between the object to be measured and the caliper may cause measurement error. Allow enough time for
the temperatures to equilibrate. the temperatures to equilibrate.
●Performing an accuracy check. ●Performing an accuracy check.
※Model TVC-60 shown.
①Jaw Alignment ①Jaw Alignment
In closed position, make sure the measuring surfaces on the outside jaws In closed position, make sure the measuring surfaces on the outside jaws
align properly and there is no gap ( no light should leak past. ) align properly and there is no gap ( no light should leak past. )
②Confirm "0" points on scale ( see diagram at right ) ②Confirm "0" points on scale ( see diagram at right )
With jaws closed as in step ① above, make sure the reading is zero and 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. the vernier scale graduations align at the "0" and "39" positions as shown.
③Depth Confirmation ③Depth Confirmation
Position caliper on a flat surface for depth measurement. Reading should Position caliper on a flat surface for depth measurement. Reading should
be "0" as in step ② above, with the verier graduations aligned at the "0" be "0" as in step ② above, with the verier graduations aligned at the "0"
and "39" positions. and "39" positions.
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
●EXAMPLE 1
Main Scale
( 1mm )
Vernier Scale
( 0.05mm )
●EXAMPLE 2
Main Scale
( 1mm )
Vernier Scale
( 0.05mm )
●EXAMPLE 3
Main Scale
( 1mm )
Vernier Scale
( 0.05mm )
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 and lock screw
slightly loose to prevent over tightening due to thermal
expansion which may affect accuracy.
●Store in supplied case in a cool, dry location.
In order to prevent measurement error, please note the following.
POSITIONING CALIPER ON OBJECT
＜Flat surfaces＞
When measuring features
with flat surfaces, make sure
Measured Value: 77.00mm
the measuring surface of the
jaws are parallel to the
Reading
surfaces to be measured.
7 7
＋
＜Cylindrical surfaces＞
0.0 0
7 7. 0 0
When measuring cylindrical
features, make sure the
caliper jaws are perpendicular
Measured Value: 77.30mm
to the cylinder axis as shown.
Reading
VIEWING THE SCALE
7 7
＋
0.3 0
Scale should be read from
7 7. 3 0
directly above the calipers.
Due to step in height of vernier
scale relative to main scale, if
Measured Value: 77.35mm
viewing direction is not directly
above the reading may have
Reading
parallax error.
7 7
＋
0 .3 5
7 7 .3 5
SPECIFICATIONS
●Material : Stainless Steel
Maximum permissible error
Proper alignment
PREVENTING ERRORS
Object being measured
Model No. TVC-60 TVC-100
Measuring Range 600mm 1000mm
Resolution
0.05 mm
±0.10mm
±0.15mm
Weight
approx. 1.2 kg approx. 2.5kg
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
Jaw