Multi-Scale” Eberhard & Co

“Multi-Scale” Eberhard & Co. , La Chaux-de-Fonds, Chronograph. Made in the 1940s. Very fine and rare, large, stainless steel "Staybrite" gentleman's wristwatch with square button chronograph, register, tachometer and telemeter. Three-body, polished and brushed, lapidated straight lugs. Matte silver with painted Arabic numerals, subsidiary seconds and 30-minute registers dials, outer 1/5th seconds scale and telemeter, inner tachometer. Steel "bâton" hands. Cal. 7630, rhodium-plated, 17 jewels, straight line lever escapement, monometallic balance, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 39 mm. Thickness: 13 mm.