3,335 CHF
Phonotélémètre Thouvenin, Breveté S. G.D.G., No.1232, circa 1900. Unusual gun metal keyless watch with chronograph, 15 seconds chronograph, sound telemeter, 15 minute progressive recorder, special kilometric map distance gauge and compass, recommended by the War Minister, officially adopted by the French Military Schools. Three piece, "bassine et filets", a small compass set in the winding crown and small knurled wheel on the band for the distance gauge. White enamel on the front with Roman numerals, outer gauge scale calibrated for 20 km and inner for 15 km. White enamel on the rear face for the 15 seconds chronograph, inner red 5 kilometer telemeter ring and subsidiary minute register.
Auctioneer:
Antiquorum
Date:
1995-04-22
