BELL SYSTEM PRACTICES AT&T Co Standard, SECTION 074-256-115-2, Issue 2, July 1979, TOOLS; SCREWDRIVERS, OFFSET-DESCRIPTION
AECO H-21766, Offset Double-End Screwdriver.
A small, purpose built Offset to meet Bell’s requirements; “For use on the 197- and 198-type switches and step-by-step type...