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Has anyone seen one of these?

[3]
[10] Like what you see?
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TakeDeadAim

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#1
I bought this at a sale, unlike most Starrett tools it has not model number. I have looked around a bit and not found one. However I don’t have access to a lot of old tool catalogs.

If anyone has seen a rule like this please let me know what you know about them and what Starrett called them.

Thanks



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francist

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#2
Very nice!
I'm not 100 percent sure, but seem to recall something about laying out work on cylindrical parts. Like key ways on shafts?
I'll see if I have it in an old catalogue somewhere.

-frank

Edit: or maybe not, might be getting that mixed up with something else.
 

Norseman C.B.

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#3
That was my take on it also, enjoy it's handiness !!
 

TakeDeadAim

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#4
Thanks gentlemen, I figured someone on this forum would have seen one at some point in our collective years of experience. I "had" to have it when I saw it despite not knowing exactly what I'll use it for and for the price just having it was worth it.
 

RJSakowski

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#5
I bought this at a sale, unlike most Starrett tools it has not model number. I have looked around a bit and not found one. However I don’t have access to a lot of old tool catalogs.

If anyone has seen a rule like this please let me know what you know about them and what Starrett called them.

Thanks



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It is a box square aka key seat rule used to lay out keyways on cylindrical shafts. Starrett and Brown and Sharpe both made them c.a. late 19th century. I couldn't find catalog nos. for either of them.
They have been superseded by key seat clamps, Starrett no. 298, Brown & Sharpe no. 377.
 

TakeDeadAim

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#6
Thanks much RJ, funny when I looked at it I thought it would be great for laying out lengths on shafts, guess I was not too far off.
 

kd4gij

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#7
Send a pic to Starrett. They will get you the info on it.
 

TakeDeadAim

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#8
KD4GIJ thanks, Ill try that
 

KBeitz

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#11
Yep.... It's a Box Fitter's Steel Square/Key Seat Rule
 
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