Vintage T.M.U. Heuer Ref.403.225 53mm stopwatch #1

A T.M.U. vintage Heuer stopwatch. A great addition to the vintage car. Quite rare. Great condition. No side trigger.

1/100000 hour recorder, 1 revolution in 3.6 seconds totaling 100 TMU-units of 0.036 seconds each, registers up to 30 revolutions = 3000 TMU’s or 108 seconds. 3 crown functions. Precision lever movement, 7 jewels, shockprotected. Running time 1¼ hours

Ref.403.225
Diameter: 53mm
Year of production: 1971