Find the angle of a slot on a cylinder

Find the angle of a slot on a cylinder angle slot Angle Head · Air Turbine Spindle · Measuring Instruments · Tool Offset Sensor Slot Milling Cutter supply linear slot diffuser 3 way Connection Angle 20 mm T Slot

supply linear slot diffuser Angle plate with t-slots, type BP22- GG 30 stress-annealed- inkluding cover and transport crew AmmBmmCmmDmmEmmFmmGmmHmmImmJmmKmm(+0

lucky jili slot The trick is to use a tool point which the dimension tool can catch since it will not catch automatically the 90° angle to the line  V-Slot Corner Connector, 90 degree Angle, Milled from Solid Aluminum