Have a look at the date on the drawing title block in the attachment. The drawing came my way today from a regular customer who has lots of old products, many dating back to the 1950s, but this is easily the oldest one I've seen. All fractions, of course, and no tolerance table.
The product this goes into is some form of electrical switching unit that also hasn't significantly changed in all this time.
The product this goes into is some form of electrical switching unit that also hasn't significantly changed in all this time.