UK DRAWING/JOB NUMBER - 18

1½" Gear Wheel 50 Teeth (NB drawing error - should be 1¼")

Meccano Part No. 27 (Gear Wheel 1¼" dia. 50 teeth)

Drawing Date - 10/07/1931
The following revisions are noted on the drawing:-
Issue 4 - 09/08/1945