How many faces does a french cross staff has?

A french cross staff has 8 faces.

Solution

Cross staff: Cross staff is an instrument, which is used to measure the angle of elevation and it consists of a calibrated staff along with a perpendicular staff sliding onto it.

Cross staff can be classified into three types;

• Open cross-staff
• French cross-staff
• Adjustable cross-staff

French cross staff: French cross staff is an instrument which is used to set out an angle of 45o or 90o. It consists of eight octagonal tubes with slits on each eight face.

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