Beautiful! Any chance you can measure the across the flats dimensions?Hinsdale Catalog 101 has been found online.
Pages 11 and 31 answer most questions, they are definitely Americanised Whitworth Dimensions.
Updating my wrench set status I see no HW6 but I’ll continue the search for HW1
And here are images of Socket SR24W alongside a BSF nut and bolt.
@humber2 please please measure the AF opening with a caliper pleaseHinsdale Catalog 101 has been found online.
Pages 11 and 31 answer most questions, they are definitely Americanised Whitworth Dimensions.
Updating my wrench set status I see no HW6 but I’ll continue the search for HW1
And here are images of Socket SR24W alongside a BSF nut and bolt.
Documenting and saving an interesting thing with the Hinsdale wrenches. We have the example above, and the example below.It is interesting to look at a Stahlwille chart showing min and max tolerances for each size socket or wrench opening.
45/64 will be a tight fit for 3/8 WW so I’ll do a check fit tomorrow.
23/32 would be much closer to that mark.
My Hinsdale collection seeks HW1 and HW6 to complete, looks likely to be pre WW2, here it is…
