GB/T 35095-2018 in English

Explanation of professional terms and practical application cases

Deviation of coincidence: refers to the difference between the "zero" mark on the secondary scale and a mark on the main scale when the "tail" mark on the secondary scale does not coincide with the corresponding mark on the main scale. In practical applications, this deviation must be controlled within ±0.03 mm to ensure measurement accuracy.

Implementation suggestions

1. Choose the appropriate π scale model: Select the appropriate graduation value and measurement range according to the diameter range and accuracy requirements of the object to be measured.

2. Ensure the inspection environment conditions: perform the inspection in an environment with a temperature of 20°C ±5°C and a humidity not exceeding 70% to reduce the influence of external factors on the measurement results.

3. Use inspection equipment that meets the requirements: use a tool microscope or a reading microscope to inspect the spacing and coincidence deviation of the scale marks to ensure that the inspection accuracy meets the standard requirements.