Box Sextant is an instrument used for measuring angles :
AUpto 60° with one minute accuracy
BUpto 180° with a second accuracy
CUpto 120° with a minute accuracy
DUpto 90 ° with a minute accuracy
AUpto 60° with one minute accuracy
BUpto 180° with a second accuracy
CUpto 120° with a minute accuracy
DUpto 90 ° with a minute accuracy