G6A/676 - Clock Mark III A

Tests

Period 24 hours position at normal temperature and 4 hours in each position at -20C
Position Dial horizontal and vertical
Temperature -20C and normal
Permissable errors

At normal temperature 60 seconds in 24 hours

At -20C - 30 seconds in 4 hours

Source: A705, 150/4/1831

Further details can be found on Aircraft Clocks of the World or directly at G6A/676