Catalog drawings and actual tools
The GM70-L and the 9/32 M70-L (20 tooth) are the same ratchet with different inserts. The insert is the “square” and the internal gear. This switches over with 2 screws. In 1941 and 1942 the ¼ inch ratchet existed, but no sockets were offered. In 1945 a full set was offered. The ratchets are (L and M) are 20 tooth miniatures of the full size 3/8 and ½ ratchets
The on top is a 1946 illustration.
The 1st photo is an M-70M converted to ¼ and is the same as a GM-70M,
The third and Fourth TM-70B in Chrome and the GM-70S in industrial finish – These are identical
The 4th ratchet is GM-70L in post war chrome
The labels at the bottom show the logo differences 1946 and 1953.