Hello al,

I would like to know details about this rare Heuer Stopwatch.

I know:
This is a professional Stopwatch used in industry for work tasks cycle time studies. Was used by professional stopwatching technnicians.

It was given to me in 2002 by one of this technnicians when he gets retired. I am process engineer in a industrial company.

Stopwatch manage T.M.U. (Time Measurement Unit) that It is 1/100000 hour ir 0.036 seconds each.

This is not the model known as T.M.U Heuer vintage Stopwatch, It seems to be a different version (I Will upload photos of both).

You can see that T.M.U version has TMU letters written above Heuer logo. ..and my Stopwatch has Hour Decimal written above Heuer logo. Units in the dial are also different.

Things I do not know:

It seems to me that my Stopwatch is a previous and older model than the T.M.U Heuer Stopwatch. T.M.U. is early 1970s and I think my Stopwatch is 1960s. I am right or wrong?

I would like to know any detail of my Stopwatch as manufacturing year, name, etc. .

Many thanks in advance,
Best Regards