The Starrett 237 Steel Rule Depth Gage is a very handy depth gage that can be used to quickly obtain measurements in 64th of an inch or 1/2mm by simply adjusting the rule to the required depth.

Starrett 237 - Steel Rule Depth Gage

• The gage consists of a nicely finished, hardened steel head and an accurate, machine divided, tempered steel rule
• Gage can be smoothly adjusted to the required measurement and then locked into position by a knurled nut
• Base is cut out on one side, adjacent to the rule, permitting easier readings and more accurate measurements