The angle between two holes on the curved face of a cylinder

Calculate the angle between two holes on the curved face of a cylinder. For this equation to work, the center of the holes must be co-planar and perpendicular to the curved face. The value x is the shortest distance between two holes, which can be measured with a caliper using the external jaws.

• Find Angle (θ)

• Find Diameter (D)

• Find x

Diameter of the Cylinder (D):

Hole 1 Diamater (H1_d):

Hole 2 Diamater (H2_d):

Hole Chamfer* (Ch x 45°):

Measured Distance (x):

Angle

Radian:

Degree:

Under Construction.

Under Construction.

*If chamfers are around the holes, this equation will fail on angles above 90°. You can measure up to 180° with no chamfers as long as the cylinder fits inside the caliper jaws.