Diamond or micrometer?
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=153201
Printed Date: 03 Nov 2025 at 11:44pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Diamond or micrometer?
Posted By: ACGreg
Subject: Diamond or micrometer?
Date 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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Replies:
Posted By: DiyDave
Date 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...
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Posted By: Calvin Schmidt
Date Posted: 20 Aug 2018 at 8:00pm
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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 |
Posted By: ACGreg
Date Posted: 20 Aug 2018 at 8:17pm
| Thank you both I was curious as to the timing. |