Monday, March 13, 2023

Monday Mystery, Brass pointers


 Here are a couple of pointer or guide-type things, made of brass, a little bit decorative. They look to be made to slide over possibly wood slats or metal bars about 3/4"x 2" . The adjustable (or replaceable?) points do not look bent or abused, I can't quite figure out where these things might be used. Thoughts?

6 comments:

  1. Perhaps some kind of a story stick or bar gauge? If the tips are replaceable, these could even be trammel points.

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  2. Those are trammel points with the caliper legs installed. They can be used to measure inside and outside diameter, but I've never seen anybody actually use them. A nice find because they often get lost or repurposed.

    https://www.starrett.com/metrology/product-detail/59F

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  3. A better picture of how they're set up in general:

    https://www.motion.com/cdn-cgi/image/fit=scale-down,onerror=redirect,anim=false,quality=75,format=auto,metadata=none/motion3/fsdb/images/item/Starrett_59F.jpg

    I can't find a picture of caliper legs in use and like I said above I've never seen anybody using them. Anything large enough where you're going to need them you're probably going to measure with something else.

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    Replies
    1. I have a pair here too, found in a machinist chest. Never knew what they were for.

      Inno

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  4. Of course, trammel points. https://www.youtube.com/watch?v=2RFEs4mQb44

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