New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 76
f desired. The jaws are reversible onthe plate; the sliding jaws are reversible in theblocks, and the screws are also reversible, beingsquared for the wrench at both ends. The slidingjaws have parallel grooves the entire length, andthe bearir.g of the screws in them also extend theirentire length.…
Railroads · Railroad cars
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-456-284.webp)
