Help identifying this Combination Square Head

[markbugno]

Help. I’m not even sure what it’s proper name is. I saw one reference to a center square, but I’m not sure. Also not sure who the maker is. Any help would be appreciated.

Mark

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[Musicinabottle]

I'm unsure, but I know it ain't no Harbor Freight!

Obviously has a specific purpose. I've been a builder for over 30 years and I've never seen one of those. It's cool looking!

__________________

 

[The Cobbler]

no help on the make, but it's sure purdy!

 

[Musicinabottle]

It almost looks homemade from two squares riveted together.

 

[The Cobbler]

that was my thought too, except the other half isn't broached for the slide or thumb screw

 

[Stuart in MN]

Stick a ruler in that slot and then you can use it to find the center point on the end of a wood or metal cylinder. Hold it against the end of the cylinder, scribe a line, then rotate it 90 degrees and scribe a second line. Where the two lines intersect is the center point.

 

[LXCam]

That's a gorgeous piece right there. I wouldn't be surprised to find out it's from the 30's or 40's. You might try looking up vintage starret tools.

 

[notlob]

Standard Tool Co. "Center Head." If you would be interested in trading it for other tools, please let me know.

STC Catalog page from ~ 1900:

 

[Musicinabottle]

Stick a ruler in that slot and then you can use it to find the center point on the end of a wood or metal cylinder. Hold it against the end of the cylinder, scribe a line, then rotate it 90 degrees and scribe a second line. Where the two lines intersect is the center point.

Right on! Now I gotta have one, even if I've never really needed one before.