UK DRAWING/JOB NUMBER - 21

Worm

Meccano Part No. 32 (Worm ½" dia.)

Drawing Date - 07/07/1931
The following revisions are noted on the drawing:-
Issue 6 - 15/05/1932
Issue 7 - 14/02/1944
Issue 8 - 14/06/1945
Issue 9 - 21/08/1951
Issue 10 - 13/05/1952