Does anyone know the inner dimensions of a model A crank handle? I got a great old crank easel that is missing it's crank arm and thought to look at automotive crank arms as a possible replacement (could not find listings under crank easels for just the crank arm). The easel has a 1.25 inch long square that's about 3/8" to a side. I'm using a 7/8 star socket wrench (only one of the two 7/8 that I have fits it--so it's a little bit of an odd size) which is not ideal because it's not deep enough. And yeah I know 3/8 is less than 7/8 but it's a square and the socket is a star if that explains anything. I tried to go to mm that was between 7/8 and 1/2 but that didn't work. I thought if the crank hole was close to 3/8 I could file it to fit...probably wishful thinking! lol

Thanks for any info...