Definitions by Shekhar

tachymeter 

A tachymeter (also tachymetre or tacheometer) is a kind of theodolite used for rapid measurements and determines, electronically or electro-optically, the distance to target, and is highly automated in its operations. Tachymeters are often used in surveying.

tachymeter in watches!!

tachymeter by Shekhar August 26, 2007