submit to reddit

Please Let Me Know How Much You Like This (1 is very Bad - 10 is Excellent)

Checking parallelism in horizontal plane between two holes

Insert two shafts into the holes to be checked. Ensure no gaps between shafts and holes.

Move the orange square of a spirit level along the shafts while keeping continuous contact between the shafts and the square.

The spirit level shows the error in parallelism between two holes in horizontal plane (not in vertical one).

(c) All rights reserved.