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Diamond or micrometer?
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ACGreg View Drop Down
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Joined: 05 Oct 2014
Location: South IN
Points: 39 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACGreg Quote  Post ReplyReply Direct Link To This Post Topic: Diamond or micrometer?
    Posted: 20 Aug 2018 at 5:05pm
I am guessing the diamond emblem on NOS boxes/parts is older. Any ideas on time frame or when they switched?
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DiyDave View Drop Down
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 52028 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 2018 at 6:30pm
I know the gear in the diamond had been around since 1901, and around 1967(IIRR) they went to the triangle AC, but remain clueless about the micrometer logo...Wink
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Calvin Schmidt View Drop Down
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Joined: 11 Sep 2009
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Points: 4526 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Calvin Schmidt Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 2018 at 8:00pm
Diamond with Allis-Chalmers under the A-C is 1949-1965. Triangle is after 1965 to the end.  Diamond with Allis-Chalmers and Milwaukee is pre 1949. Micrometer was used mostly in the 50's  
Nothing is impossible if it is properly financed
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ACGreg View Drop Down
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Joined: 05 Oct 2014
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Points: 39 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACGreg Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 2018 at 8:17pm
Thank you both I was curious as to the timing.
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