AN ENGLISH TWO-DAY SURVEY CHRONOMETER
THOMAS MERCER, ST. ALBANS, NO. 23786. CIRCA 1965
Canvas and aluminium bound outer box, aluminium inner case, 100 mm. diameter silvered dial, 24-hour ring, 56-hour state of wind ring numbered '23786', subsidiary seconds ring with cut-away sector to electric contacts, stop/start lever to rim, movement with chain fusee, spring detent escapement to cut bimetallic balance with palladium helical balance spring; tipsy winding key, setting key
The box-- 6¼ in. (16 cm.) high
AN ENGLISH TWO-DAY SURVEY CHRONOMETER
THOMAS MERCER, ST. ALBANS, NO. 23786. CIRCA 1965
Canvas and aluminium bound outer box, aluminium inner case, 100 mm. diameter silvered dial, 24-hour ring, 56-hour state of wind ring numbered '23786', subsidiary seconds ring with cut-away sector to electric contacts, stop/start lever to rim, movement with chain fusee, spring detent escapement to cut bimetallic balance with palladium helical balance spring; tipsy winding key, setting key
The box-- 6¼ in. (16 cm.) high
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