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grheiner · 01-19-25, 02:22 AM

Thanks for the responses. As I figured it out the inner red scale is the Telemeter with the km marking on it, since speed of sound is approx 300 meter/second and the 1 km mark is at 3 seconds, so thatone fits, the outer black scale is some kind of Tachymeter, certainly not an U-Jagd, because 200 meter in 60 sec is neither 12 knots nor 12 meters per seconds. My best guess is it is either used for some artillery function which I dont have a clue about, or as far as it is marketed as a torpedo timer it maybe somehow measuring the runtime of the fish.

01-19-25, 02:22 AM	#6
grheiner Swabbie Join Date: Dec 2020 Posts: 14 Downloads: 18 Uploads: 0	Thanks for the responses. As I figured it out the inner red scale is the Telemeter with the km marking on it, since speed of sound is approx 300 meter/second and the 1 km mark is at 3 seconds, so thatone fits, the outer black scale is some kind of Tachymeter, certainly not an U-Jagd, because 200 meter in 60 sec is neither 12 knots nor 12 meters per seconds. My best guess is it is either used for some artillery function which I dont have a clue about, or as far as it is marketed as a torpedo timer it maybe somehow measuring the runtime of the fish.