No. 257
Series Full-sized Surface Gages
No. 257 Series (Hardened Steel Base)
No. 57 Series (Cast Iron Base)
This is a full-size surface gage that has polished or attractive black
wrinkle finish on all nonbearing surfaces. The base is ground flat and
there are two gage pins, frictionally held, which can be pushed down and
referenced against the edge of a surface plate or T-slot for linear work.
No. 257 Series (Hardened Steel Base)
This is our finest full-size surface gage. The stable steel base is fully
hardened, ground, and nicely finished. There are four gage pins, frictionally
held, that add versatility for referencing the tool.
Snugs for Both Nos. 57, 257 Series
This new style snug at the top of the spindle that comes standard with
the Nos. 57 and 257 Series will hold scribers, rods, or indicator stems
ranging from 3/32-1/4" (2.4-6.35 mm).
This permits use of all of our test indicators:
No. 196
No. 564*
No. 650
No. 651
No. 708*
No. 709*
No. 711*
No. 811*
(*Snugs must be used with proper indicator holder)
Also available are two special Universal Snugs that
will fit all No. 57 and No. 257 Surface Gages and will hold all of the
above Starrett test indicators. These are the No. 57S and No. 58S.
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* Snugs must be used with the proper indicator holder.
All items packed one in a box.
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