Motometer..unknown mfg...
 

I got this online for a reasonable price.....it works and that is a bonus...

But what is it? It does not have "Boyce" on it.

A search turned up fine threaded screws as an attribute of an original motometer...

60's or 70's repro?

There are patent dates on one of the discs...Mar 17-14, Jul 16-18 and Aug 12-18...

And, do I have it assembled correctly?

Re: Motometer..unknown mfg...
 

I have one that I can't ID also. The thread is 7/16-20 as opposed to the 7/16-27 that the Boyce uses.
Terry

Re: Motometer..unknown mfg...
 

This is 7/16" but probably 27 tpi, just based on measuring and counting the threads....and the nut is brass....

Re: Motometer..unknown mfg...
 

One member here, John Duden, recently bought a tap, 7/16 - 27 and has been making and selling the nuts.
Terry

Re: Motometer..unknown mfg...
 

I have one....Is it supposed to have two, tightened against each other?

I'm going to watch for a suitably worn radiator cap to mount it on....

Re: Motometer..unknown mfg...
 

Its a Boyce Motometer with a Model A faceplate. The stem looks original not sure about thr rings and Ford plate. Its been tinkered with