/ Precision Measuring Tools / Precision Hand Tools / Precision Shop Tools / Surface Gages / 257D * Not actual product image 51243 257D Full-sized Surface Gage 51243 Other similar products 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) 12"/18" Spindle. Features Specifications Parts Downloads Contact Starrett Features Finest full-size surface gage Stable steel base is fully hardened, ground and nicely finished Four frictionally held gage pins that add versatility for referencing the tool Specifications Spindle Length (in): 12" & 18" Spindle Length (mm): 300 & 450mm Base Size (in): 3-1/2 x 3-3/16" Base Size (mm): 90 x 80mm Parts Member of Kit Item #DescriptionPart No.QtyInformation 1BASE #257-1218014-01 2SPINDLE, #57CPT991241 3•SPINDLE, 12"01837-01 4•SCREW, .140-40 SLOT X .281 LONG01883-01 5SPINDLE, #57DPT991251 6•SPINDLE, 18"01838-01 7•SCREW, .140-40 SLOT X .281 LONG01883-01 8BOLT/SLEEVE, SPINDLE07801-01 9WSHR,.219X.744X.25001848-01 10WSHR,.202X.558X.06201882-1/21 11SPRING, .238X.324X.500X.043X401860-01 12NUT, .200-4001874-01 13SCRIBERPT165901 14ROCKER18010-01 15SPRING, .247X.357X1.00X.055X801870-02 16SCREW, .200-40 THUMB X .875 LONGPT082511 17ROC FULCRUM, .375-4018019-01 18PIN, BASE GUIDEPT018784 19WSHR,.250X.500X.03118018-01 20SNUG ASSEMBLYPT187241 21•SNUG,SCRIBER18726-01 22•BOLT, SCRIBER #5718721-01 23•SLEEVE, SCRIBER18722-01 24•WSHR,.187X.471X.05018723-01 25•SPRING, .259X.315X.313X.028X301875-01 26•NUT, .187-3201854-01 Downloads 2D Dimensional Drawing (PDF) .pdf 28.82 kb