HEAVY DUTY 300 MM / 12" FIRM JOINT INSIDE ID CALIPERS HARDENED STEEL ARMS NEW

SIZE: 12” - 300 MM

FIRM JOINT INSIDE CALIPER.

faces are hardened to a hardness of 650 ± 50 HV exactly identical in shape with the contact points

and equally distant from the fulcrum, the legs are joined together by a rivet. The legs are set correctly

so that the working ends meet evenly and closely when brought together. In case the two legs are

joined together by screw, nut and washer instead of rivet, then the threads of screw and nut should

be full and true and the joints made such that these function freely with even tension without any

undue play or stiffness. The component parts of the calipers should be free from seams, cracks,

flaws and must have smooth bright finish