SAMCO CP7, Instructions Manual

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b. Parallel misalignment - shafts have axis parallel, but offset.
The necessary tools for checking alignment are (1) a straight edge and caliper or micrometer, or (2) a dial
indicator with mounting magnet and extension bars.
Method 1 - Straight Edge
Proceed with this method only if satisfied that face and outside diameters of the coupling halves are
square and concentric with the coupling bores. If this condition does not exist or elastomeric couplings do
not make this method convenient, use Method 2.
Check for angular alignment with micrometer or caliper at 90°
intervals. The unit is in angular alignment
when these four (4) measurements are the same. (Figure IIIa.)
Check for parallel alignment by placing a straight edge across both the coupling rims on all four sides.
The unit is in parallel alignment when the straight edge rests evenly across both coupling rims in all four
(4) positions. (Figure IIIb.)