Dial Depth Gages

Shop Dial Depth Gages

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 Dial Depth Gages (0-1/2"/0-10MM)
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 (0-1/2"/0-10MM)
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.

642 Top Reading Dial Depth Gages (0-8.6"/0-215MM)
This dial depth gage uses the back-plunger indicator to provide an upward facing dial for easier readout. The operator selects the extension and contact point required, zeros the tool on a master and then reads any deviation of the work directly on the dial.

• Indicator does not have to be repositioned to get the full range available
• Choice of 2-1/2" (60mm) or 4" (100mm) base
• Two contacts and five extensions extend the range to 8.6" or 215mm
• Charts are supplied showing combinations of contacts and extensions required to achieve certain lengths

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 against a surface plate or other calibrated surface. If needed, rotate the bezel dial's zero indication with the needle. Zero is then set and can be locked via the locking screw.