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Any Idea on this Protractor's Manufacturer?

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Forum topic by Don Broussard posted 06-15-2015 07:39 PM 817 views 0 times favorited 13 replies Add to Favorites Watch
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Don Broussard

3022 posts in 1717 days


06-15-2015 07:39 PM

I picked up this protractor for a combination square this weekend. There are no manufacturer’s markings on it, and the ruler was not part of this package. The best I can read, the patent date is “Aug. 7, 1883”. The degree markings are clear, with only a bit of pitting on part of the markings. The dial turns well, since it was machined well and has been cleaned up a bit. The straight part of the outer circle confuses me too. It looks like it was machined but I can’t figure out what role that machined surface played. The side opposite the degree markings has “8 1 8” on the flat edge.

There is still a bit of bright orange paint in the checkering. I’ll try to get all of that out too.

Any help is appreciated.

BEFORE:

AFTER:

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!


13 replies so far

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Rick M

7923 posts in 1845 days


#1 posted 06-15-2015 07:55 PM

Google suggests Starrett.

-- http://thewoodknack.blogspot.com/

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Don Broussard

3022 posts in 1717 days


#2 posted 06-15-2015 08:00 PM

Rick—That was my first thought too, but the lack of a Starrett marking suggested otherwise. I’ll try the google image thingy.

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!

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JoeinGa

7482 posts in 1472 days


#3 posted 06-15-2015 08:19 PM

The bottom “after” pic. Isn’t that something engraved (or stamped) right there under your thumb?

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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Rick M

7923 posts in 1845 days


#4 posted 06-15-2015 08:25 PM

Starrett has a patent the same date for a protractor head and searching the patent date + protractor lead me to find discussions about a 7” Starrett protractor head that looks just like yours.

-- http://thewoodknack.blogspot.com/

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Don Broussard

3022 posts in 1717 days


#5 posted 06-15-2015 08:32 PM

Joe—Those are just small pits, but they do look like small stamped letters. I had to go back and look with a magnifying glass to make sure.

Rick—I went on Starrett’s website and described the protractor head. I sent a few pictures so hopefully, I’ll have the ID shortly.

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!

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BinghamtonEd

2281 posts in 1835 days


#6 posted 06-15-2015 08:38 PM

That 5” starrett has the same patent date, there was also the 7” version. The differences I see are that the curved shoulders (or whatever they’re called) on yours seem to be less exaggerated, and the dimpling on the starrett is present on the center piece. Maybe yours is a later or earlier production model.

-- - The mightiest oak in the forest is just a little nut that held its ground.

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Don Broussard

3022 posts in 1717 days


#7 posted 06-15-2015 09:22 PM

Ed—Yours is similar but different, as you pointed out. The base on mine is just under 7”. Interesting that yours is checkered/knurled on the face of the dial too. I wish the ruler would have been available on mine . . .

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!

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longgone

5688 posts in 2774 days


#8 posted 06-15-2015 09:34 PM

Don, I have a Starrett 12” and the head is different. Mine also has a level on the back side. Not sure how old mine is but I would imagine the have made numerous models and designs over the years

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Tim

3119 posts in 1427 days


#9 posted 06-15-2015 11:20 PM


The straight part of the outer circle confuses me too. It looks like it was machined but I can t figure out what role that machined surface played.
- Don Broussard

Don it looks to me like that part of the circle was broken off at some point and then it was flattened out by a file or something to clean up the rough edges.

Nice looking find though.

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Dark_Lightning

2635 posts in 2574 days


#10 posted 06-16-2015 02:28 AM



Don, I have a Starrett 12” and the head is different. Mine also has a level on the back side. Not sure how old mine is but I would imagine the have made numerous models and designs over the years

- Greg..the Cajun Wood Artist

I have one of these, as well, in a 6” size. The level means you can use it as an inclinometer; mine is an automotive version for checking driveline angles and so forth.

-- Random Orbital Nailer

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Don Broussard

3022 posts in 1717 days


#11 posted 06-16-2015 02:40 AM

Tim—You’re probably right about that part of the outside circle having broken off and filed down. If it was at a 45 degree angle, it might make some sense.

Greg/DarkLightning—Thanks for showing additional examples. I looked at the Starrett website and they have a plethora of different options.

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!

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oldnovice

5730 posts in 2833 days


#12 posted 06-16-2015 06:27 AM

Starrett, just by the way the patent numbers are stamped and the font used!

-- "I never met a board I didn't like!"

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racerglen

3112 posts in 2246 days


#13 posted 06-16-2015 12:01 PM

Agree with Starrett, have one that was a roofers tool for years for checking/setting pitch on rafters etc, came with an 18” rule that’s now 16” :-(

-- Glen, B.C. Canada

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