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These depth gages are direct reading tools, referencing from their hardened and ground bases. All bases are 2-1/2" (64mm) long. They are quicker and more convenient to use than any other type of depth gage within their ranges and accuracy. Electronic Indicators can be furnished by special order.
640, 640M DIAL DEPTH GAGES
0-1/2"/0-10MM 640 DIAL DEPTH GAGES
The contact is slightly up into the base at rest. In action, the inspector sets the contact at zero, which is usually at the bottom of the base. Then the top button is pushed down to contact the work and the measurement is taken.
640R DIAL DEPTH GAGES
These gages are the same as the 640 except they have reverse movement (no push button) and can easily be used with one hand. Simply set on zero and apply the contact to the work and read the measurement.
640 Dial Depth Gages Range
Dial Reading 0-50
643 DIAL DEPTH GAGE 0-.125"
This gage has a knife-edge base and a needle point contact which has been hardened and ground. The knife-edge base has a cutout so the conical point can be precisely positioned for close work. Point is 1/2" (12.7mm) long with a 40º included angle.
In action, the inspector gently pushes the point down to read zero with the base and then pushes down to make the needle point contact the workpiece to take the measurement.
643 Dial Depth Gages Range Graduation Dial Reading
0-.125" .0005" 0-25-0
In Case Cat. No. 640JZ
640RJZ 640MJZ 640MRJZ
52705 52709 55997 56001
Cat. No. EDP 643JZ
Electronic version available from Special Order Division.