57B Full-sized Surface Gage 50293

Starrett Surface Gages are designed for a wide variety of uses. This is a basic tool for machinists and toolmakers. The main uses are for accurately scribing lines, transferring measurements and for probing surfaces in inspection work. (2) 9"/12" Spindle.


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  • Full-size surface gage with attractive finish
  • Two frictionally held gage pins in the steel base which can be pushed down and used against the edge of a surface plate or T-slot for linear work


  • Spindle Length (in): 9" & 12"
  • Spindle Length (mm): 225 & 300mm
  • Base Size (in): 3 x 2-9/16"
  • Base Size (mm): 75 x 65mm