On 4/7/15 3:57 AM, A. Nonamus wrote:
> Thanks for the tips. I have the basic bulb specs; they're on the labels
> of the readouts. What I want are design spec dimensions (as opposed to
> measured dimensions) of various parts of the readouts.
>
Reverse engineering is par for the course on parts that old.
It may or may not be wise to guess that they used millimeters instead of
inches; does the part appear to be a copy of an American device?
Sometimes they use the nearest equivalent round metric value to the inch
measurement. For an example of this taken to extremes, look at the rear
axle threads on various brands of bikes. 24 TPI, 25 TPI, 25.4 TPI...