SPI Elect-Mike a historical digital micrometer

[cyanidekid]

just posting this as a curiosity and a piece of metrology history. this was an early electronic digital micrometer,
from the 1970s I'd guess. it would have been cutting edge when it was new, still seems to be working very well.

 

[greif1]

I used to use one of those way back. I think it was made by a local company near Rochester NY. Has a glass scale and opto encoder inside. Measures about 1.5 inches if I remember.

 

[John Garner]

I'm thinking Moore & Wright offered a similar instrument when under Neil ownership.

 

[Machinist_max]

i have the moore and wright version, still works

 

[cyanidekid]

anyone know what these cost new?

 

[greif1]

Took a while for the filing system of my brain to dig out the original manufacturer, which is Quality Measurement Systems, Inc. of Penfield, NY
Here is a mention of the guy that founded it; https://brucerrobinson.weebly.com/
One of the patents for another scale; https://www.freepatentsonline.com/4037325.html

 

[eKretz]

I'm thinking Moore & Wright offered a similar instrument when under Neil ownership.

I was going to say the same; looks suspiciously like a Moore & Wright I've seen. Enough so that I wonder if it isn't a re-badge.

 

[CarbideBob]

Had a bunch (10 or so) of the Moore & Wrights. Frame out front different and flat on the sides.
Our first truly digital mics. So neat at the time.
I do remember a big long argument with dad to buy them.
I think they were like $300 each which was outrageous money then. Somewhere in the attic I have the invoices but that a lot of boxes to dig through.
Mine all went in the dumpster long ago. Value now I'd put at $5.
Bob