New 20-100 ft.-lb. Torque Wrench A TORQUE wrench that can
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be set 1--1 between 20 ft.-lb. and 100 ft.-lb. torque is now available from Abingdon King Dick, Ltd., Tyseley. Birmingham, 1 1. The setting is carried out by means of a set spanner after the protective end cap has been removed.
When the advocated tension on the bolt is reached, the linkage between the ratchet head of the wrench and the handle breaks and thus the operative is warned. The tool has a 1-in. square socket drive.
Sockets for use with the wrench
cover B.S. and old B.S.F. sizes from in. to i„ in., and • old Whitworth nut
sizes from 1 in. to in. British Unified Standard and American A/F sockets are available from lig to 11 in.
The use of such a torque spanner not Drily ensures that a nut is fully tightened but it also protects the bolt from being overstressed. This is particularly important in the case of main-bearing
and connecting-rod bolts. "