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What are these used for?

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Barncat

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#1
These were in an auction lot of machining parts and pieces. I tried looking around on Google, but don't even know what to call the to try and look them up. IMG_20180523_163025483_LL.jpg
 

BROCKWOOD

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#2
The rule on the edge blows my theory. I dunno. Oh, my theory? Book ends in a public library. Probably from the 50s at any rate.
 

34_40

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#3
I was thinking maybe it goes on a vertical band saw?
 

brino

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#4
I dunno......
Are the gaps different sizes? It looks like they are.
They may be some sort of gauges.....for what I do not know.
-brino
 

Bob Korves

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#5
In the photos they appear to be of different thicknesses, shims perhaps, but the scale on one of them leaves me not even guessing...
 

12bolts

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#7
They are for calculating shim thickness when aligning connections. Such as a motor to a pump. Used similar to feeler gauges, stack them together and fit them under the base. Held/manouvered by the apex of the triangle. The slot is to get around the mounting stud/s Ruler is to give you an idea of the size of the required shim, and also where the required stud holes/slots will need to be drilled.

Cheers Phil
 

Barncat

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#8
They are for calculating shim thickness when aligning connections. Such as a motor to a pump. Used similar to feeler gauges, stack them together and fit them under the base. Held/manouvered by the apex of the triangle. The slot is to get around the mounting stud/s Ruler is to give you an idea of the size of the required shim, and also where the required stud holes/slots will need to be drilled.

Cheers Phil
Thanks! I knew this was the right place to ask
 
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