Applied Examples
Precautions for Handling
- Dial gauges shall be used by being fixed to a rigid retainer to prevent the influence of flexure or the like.In measurement, the measuring direction shall be made perpendicular to the center line of the measuring probe.
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In case they are not perpendicular, a correction by the following formula is necessary:
Due to various measuring direction, the contact point sometimes can not be angled perpendicular to the measuring device.
Examples the diagrams below, where the measuring prove is set at an non-perpendicular angles and the distance between the pivot of the contact point and the measuring device is signified by the letter H: Displacement = quantity of pointer movement × COSθ
Example:
Using a PC-1A indicator, suppose the degree of angle is 3O°and the Pic Test reading is 0.05mm. The factor for the PC-1A indicator from the graph is 0.87.
0.05mm × 0.87 = 0.0435 = 0.043mm -
When modification is not necessary:
If the measuring tolerance is 10% and the graph factor is above 0.9, modification by calculation is unnecessary.
