Tool Talk
What's-It Forum => What's-It Forum => Topic started by: Papaw on October 14, 2019, 10:20:24 PM
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An acquaintance of mine has this square and is seeking info. I haven't seen it myself, but he says it has no maker's marks. It has holes on the arm that look like they are for a carpenter's pencil. Perhaps for layout, or marking an arc or circle.
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Seldom if ever find maker's marks on one of these. Very common carpenter's tool & predecessor to speed squares. The diamond shaped holes are for a carpenter pencil. Never used one for an arc myself, but marked rip or offset lines on boards.
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Mortise/tendon layout 4 post/beam construction.
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Got a quick answer from Kirk Eppler on Facebook- Seen in a Southington Hardware catalog from 1930. Called a scribing square.
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I used to have that same type of square. I know it had numbers stamped on it for the holes I think they were whole numbers with fractions at every hole, so if you put a pencil in the 1"1/8" hole you could scribe a line 1"1/8" from the edge of the board.
Mine did not have a makers mark either but it was very handy to use and surprisingly still square being made out of lightweight steel.
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It is hard to tell from your picture but it looks like the end of the rule part of the square has a radius on one side and mine had that as well. I thought some knuckle head had stuck it into a grinder.
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This is the picture of the page the square is on. I don't see the radius on one side.
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I can see drawing a circle, using any slot, or a spot in the oval on the head as your center point. Place a pencil at the desired radius, whether it be a slot, or the edge of the square. Not the most convenient way to draw a circle, but would work in a pinch. Regards, Lou
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... I don't see the radius on one side.
Is the inside corner of the arm rounded?
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Thanks for that Papaw.