8
No. 99MAC002A
8 Reading Measurements
The measurement value (C) is obtained by adding the vernier reading (B) that
matches the main scale to the main scale reading (A) shown by the vernier zero
graduation line.
■ For resolution: 0.05 mm
0 10
0 1234 5 6 7 8 9 10
0.05mm
20 30 40
1
Take the main scale reading (A) shown by the vernier zero graduation line.
If the zero graduation line is between two graduations, read the smaller one. For
example, if the zero graduation line is between 9 mm and 10 mm, read "9 mm".
A = 9 mm
2
Read the vernier graduation (B) matching the main scale graduation.
For example, if the third vernier graduation line matches the main scale
graduation, read "Resolution x graduation = 0.05 x 3 = 0.15 mm".
B = 0.05 mm x 3 = 0.15 mm
3
Add the main scale and vernier readings for the measurement value (C).
C = A + B = 9 mm + 0.15 mm = 9.15 mm
■ For resolution: 0.02 mm
2 3 4 5 6 7 8 9 1010
0.02mm
0 10 20 30 40 50 60
1
Take the main scale reading (A) shown by the vernier zero graduation line.
If the zero graduation line is between two graduations, read the smaller one. For
example, if the zero graduation line is between 9 mm and 10 mm, read "9 mm".
A = 9 mm
2
Read the vernier graduation (B) matching the main scale graduation.
For example, if the third vernier graduation line matches the main scale
graduation, read "Resolution x graduation = 0.02 x 13 = 0.26 mm".
B = 0.02 mm x 13 = 0.26 mm
3
Add the main scale and vernier readings for the measurement value (C).
C = A + B = 9 mm + 0.26 mm = 9.26 mm
Tips
For those vernier calipers with a compensation
value for inside measurement printed on the jaw,
the measurement value (C) is obtained by adding
the compensation value to the readings.
9 Precautions after Use
• If there is dirt on the measuring face, reference surfaces, sliding surface, etc.,
wipe it away with a dry cloth or a cloth slightly moistened with alcohol.
• For long-term disuse, wipe away any dirt carefully and apply a light coating of
rust preventive oil before storage.
• Do not store in locations with high temperatures, low temperatures, high
humidity, or exposure to direct sunlight.
Printed in Japan
Mitutoyo Corporation
20-1, Sakado 1-Chome, Takatsu-ku, Kawasaki-shi, Kanagawa 213-8533, Japan
URL: https://www.mitutoyo.co.jp
©2020 Mitutoyo Corporation. All rights reserved.
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