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Thread: Dial gauge point standards
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19th September 2012, 07:35 PM #1
Dial gauge point standards
Hi
I am wondering if the thread used on the point of dial gauges , where different shaped points can be fitted, has been standardized ?
Some of them are 4-48 which is a metric thread I think ?
Not sure about the older makes used, like Mercer or Mahr ?
Mike
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19th September 2012, 08:35 PM #2
Hi Mike
Some are 4-48 (imperial) and some are M2.5 I don't know for sure but if it is British or American its probably 4-48, Asian or European it should be M2.5. The threads are very close, M2.5 has a pitch of .45, 4-48 translated to metric is 2.27 dia with a pitch of .53. Not easy to check unless you have a pitch gauge.1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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19th September 2012, 08:47 PM #3
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