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Actually, I inherited from my father a set of SAE sized sockets which were made in the 1940s with a 1/2" HEX drive hole rather than a square drive one -- I think these were commonly sold from farm equipment parts stores in the '30s and '40s until the square drive came to dominate. I've never seen a proper ratchet for them, though; Pa always used a long 1/2" Allen wrench type handle for them and stopped using them as soon as he could afford a set of square drives with a ratchet. My cousins in Europe, however, say that hex drove sockets are not unusual there, but they insist that they're 13mm hexes, not 1/2". I believe that European plumbers also use USA sizes for tapered fittings, etc.
I have used the old hex drive sockets with an Allen adapter on my ratchet at times to provide just the right length of extension for some situations.
Posts in this Thread:
- Metric Trivia Question...., MI-Roger
, Sat, 24 Jul 2010 06:14:40- Drive ratchets are of the same sizes worldwide, Siegfried, Sat, 24 Jul 2010 21:17:17
- This is like wheel sizes, Noel, Sat, 24 Jul 2010 18:27:19
- Re: Metric Trivia Question...., nuotatore, Sat, 24 Jul 2010 16:22:00
- Re: Metric Trivia Question...., Bill Davies, Sat, 24 Jul 2010 07:15:56
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