Countdown with signal - a preset time counts down after start.
Intermediary stops are possible.
Once preset time is elapsed, the signal is activated. The mission of ISO is to promote the development of standardization and related activities in the world with a view to facilitating the international exchange of goods and services, and to developing cooperation in the spheres of intellectual, scientific, technological and economic activity. Lever - stopwatch movement which uses two jewels for increased accuracy and useful life of mechanical stopwatch. Memory - recorded times can be stored into memory and can be recalled at a later date. Pinlever - uses less accurate pins within lever movement instead of jewels.