Help Identifying a Mechanism

[Jeff T]

Someone gave me this mechanism. I cleaned it up hoping to find a name or some identifier, but no luck. The big wheel has 100 divisions and the plate has markings from 2.5 to 5.5 coverings a distance of 1.5" The square stock to the rear is drilled out and has a spring loaded shaft that is held in position with a set screw. I tried Google's picture search and it does not find anything like it. Anyone recognize it or have a guess as to what its purpose is? It is obviously some sort of specialty measuring device, but for what purpose

 

[terry_g]

I used to use a similar tool to set the length of the cutter bit for cutting the cylinder liner counterbores on Cummins engines.
The square part with the plunger on the right is probably the setting standard.

 

[Mcgyver]

Its a Princess Auto precision bench micrometer

No idea its intended use, its the basic function of a bench micrometer, but I'm guessing you knew that.

Other than the smart alec remark I've got nothing

 

[Martin w]

Is it a sine bar gauge for measuring tapered bearing races?
Martin

 

[Susquatch]

It's a medical device that is used for pre-marital reproductive system compatability testing. Very few are properly trained and qualified to use it. In my opinion, it's best to skip that step and use the test fit approach instead.

 

[140mower]

It's a medical device that is used for pre-marital reproductive system compatability testing. Very few are properly trained and qualified to use it. In my opinion, it's best to skip that step and use the test fit approach instead.

........ So you are suggesting the use of a go-no-go gauge then?

 

[140mower]

........ So you are suggesting the use of a go-no-go gauge then?

I understand the no go part.......

 

[Mcgyver]

Bit of speculation here...... shop made perhaps? Look at that stamping on the scale, bunch of messy "0"'s ..... and the indexed dial looks a lot like the ones on the old micrometer scales (balances).

On the units (what's the screw pitch?), if its 30 divisions on the scale over you say 1.5", and the dial is 100, then its 1/2 thou per dial graduation.

Shop made doesn't explain the base casting though.

 

[Susquatch]

Shop made doesn't explain the base casting though.

Isn't it drop dead gorgeous!

 

[whydontu]

Even the Google sucks (see previous thread), sometimes it works. That is possibly the base of a Dodge Scale Company micrometer scale.

Antique Balance Scale by the Dodge Scale Company - New York - The Micrometer - Bargain John's Antiques

All original Micrometer Scale, manufactured by The Dodge Scale Company of New York. Notice the patent dates listed – 1892 the first and the last being July 21, 1903. Fancy cast iron with marble base with scoop pan. Circa 1900. In working condition and measures 12 3/4″ wide by 5 1/2″ deep and to...

www.bargainjohn.com

 

[Susquatch]

Even the Google sucks (see previous thread), sometimes it works.

That's exactly why I'm so badly hooked...... LOL! Great find! I'd say you nailed it!

 

[Tom O]

I understand the no go part.......

The no go can be fixed with with Asperin or Chocolates.

 

[Susquatch]

The no go can be fixed with with Asperin or Chocolates.

Chocolates maybe.

Betting the aspirin is for you after she clobbers you.

 

[Mcgyver]

Even the Google sucks (see previous thread), sometimes it works. That is possibly the base of a Dodge Scale Company micrometer scale.

Antique Balance Scale by the Dodge Scale Company - New York - The Micrometer - Bargain John's Antiques

All original Micrometer Scale, manufactured by The Dodge Scale Company of New York. Notice the patent dates listed – 1892 the first and the last being July 21, 1903. Fancy cast iron with marble base with scoop pan. Circa 1900. In working condition and measures 12 3/4″ wide by 5 1/2″ deep and to...

www.bargainjohn.com

That's what I suggested the dial might be from, but the bases are not alike.

 

[whydontu]

That's what I suggested the dial might be from, but the bases are not alike.

Oops. I searched from your picture, not from the original. One day I'l learn to read the entire thread. Back to Google I go.

 

[combustable herbage]

The no go can be fixed with with Asperin or Chocolates.

Wine is an acceptable substitute as well.

 

[wmetfab]

I understand the no go part.......

Try some of the PCB oil mentioned in another post?