What "exactly" is this used for? - Woodworking Talk - Woodworkers Forum
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post #1 of 17 Old 12-17-2017, 10:08 PM Thread Starter
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What "exactly" is this used for?

There is not much at all on the internet for this tool. I found a picture of one with a machinist rule sticking out of the face, but I am confident this is not a square like that. The face does open for something to be inserted inside, but there are no measurement markings anywhere on the tool and the face does not rotate. There is a small slot at the bottom center where the "feet" are, but the slot has a 45 degree angle to it, so what ever is inserted will not stay flush at a 90 degree angle along the edge of the slot.

I have had one person say it is a specialty tool for fabricating breathing apparatus tanks, but they were speculating.

Any guesses, besides a paper weight?
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post #2 of 17 Old 12-18-2017, 03:19 AM
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can't tell much from those photos

Better photos would help, more different angles and lighter so you can see what it looks like.

Place a quarter or cigarette lighter next to it for scale.

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #3 of 17 Old 12-18-2017, 05:10 AM
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Agree.

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post #4 of 17 Old 12-18-2017, 05:58 AM
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If those 2 thumb screws come out and the round plate comes off I would like to see both sides in there
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post #5 of 17 Old 12-18-2017, 06:58 AM
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post #6 of 17 Old 12-18-2017, 07:18 AM
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Maybe it's one of these?



https://www.worthpoint.com/worthoped...-minn-71862789

Thanks to dubsca who was able to read the name.

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #7 of 17 Old 12-18-2017, 07:25 AM
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It's no wonder the tool is obscure. If the accompanied ruler was graduated it would be more useful without the base. I could never see the use of a wooden marking gauge either. They had us using them in high school but haven't used one since.
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post #8 of 17 Old 12-18-2017, 08:50 AM Thread Starter
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I am in NY currently, but will get more pics when I get back home. It is about 6 inches in length and about 4 inches tall. The two knobs take the face plate completely off. The face plate and the corresponding back plate are flat on the inside. The ruler sticking out does not rest in any notch or anything such as that. The feet on the bottom would prevent placing this along the edge of any right angle surface, and there are no other markings on the tool to use as a base line for any type of ruler to be useful.
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post #9 of 17 Old 12-18-2017, 09:09 AM
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Here is a modern equivalent. You just put a pencil on the end of the ruler to mark a line. If you are making a repetitive mark it would make the task a little easier.
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post #10 of 17 Old 12-18-2017, 12:28 PM Thread Starter
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This makes a lot of sense Steve. I will send pics when I return home which should make this determination more confident. It just seems to be over kill to cast this metal for being able to repeat measurements. But back then, I guess that didn't bother them too much.
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post #11 of 17 Old 12-28-2017, 07:19 PM Thread Starter
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Okay, as promised, here are some revised pics if they help:
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post #12 of 17 Old 12-28-2017, 07:43 PM
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that "device / tool" is still made and used today right down to the brass screws - bit more fancy perhaps - has degree markings and also a built in bubble level. used in lots and lots of situations where angles need to be copied and replicated. this is a combi square "with extras"
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post #13 of 17 Old 12-28-2017, 08:12 PM Thread Starter
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Originally Posted by TomCT2 View Post
that "device / tool" is still made and used today right down to the brass screws - bit more fancy perhaps - has degree markings and also a built in bubble level. used in lots and lots of situations where angles need to be copied and replicated. this is a combi square "with extras"
Something must be missing from mine then. There doesn't seem to be any way to determine angles, and any type of rule placed inside won't rotate. Also, if the machinist rule is inserted inside, the notch on the bottom and the screws on the front does not line up to 90 degrees (if you look at the photo woodnthings posted that is what the rule looks like when flush with the notch and the screw). That is what is baffling me.

Last edited by vicegrip; 12-28-2017 at 08:15 PM.
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post #14 of 17 Old 12-28-2017, 09:26 PM
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Quote:
Originally Posted by TomCT2 View Post
that "device / tool" is still made and used today right down to the brass screws - bit more fancy perhaps - has degree markings and also a built in bubble level. used in lots and lots of situations where angles need to be copied and replicated. this is a combi square "with extras"
I have one of those I bought used. Yours looks much better than mine. o
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If you don't have time to do it right the first time, when will you have time to do it over?
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post #15 of 17 Old 12-28-2017, 09:41 PM
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Quote:
Originally Posted by vicegrip View Post
Something must be missing from mine then. There doesn't seem to be any way to determine angles, and any type of rule placed inside won't rotate. Also, if the machinist rule is inserted inside, the notch on the bottom and the screws on the front does not line up to 90 degrees (if you look at the photo woodnthings posted that is what the rule looks like when flush with the notch and the screw). That is what is baffling me.
The only thing missing is the ruler. It isn't intended to rotate, it's just for marking a line.
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post #16 of 17 Old 12-29-2017, 09:12 AM Thread Starter
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Originally Posted by Steve Neul View Post
The only thing missing is the ruler. It isn't intended to rotate, it's just for marking a line.
Well, I am gonna start marking lines with style now!!! Thanks!
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post #17 of 17 Old 12-29-2017, 09:19 AM
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"Telsquare" turns up in Storm Manufacturing - they "invented" an engine cylinder truing machine/method and this gauge sometimes turns in in collections of machinists tools - in association with "depth gauges."
so we might be looking in the wrong craft!

several pix on line - all have a bar with no markings....
no one seems to know its purpose/use.
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