Description:
Grover & Co. technical drawings: Technical drawing of Cam 1 3/4" Stroke. For Perforated Head number 2345. S.R. number 6648. Pattern number 9301 top half. Pattern number 9302 bottom half. Template number 6648. Drawing number 4638. Scale not given. Date 21 September 1936. 40cm x 39cm. 2 copies.