On 18/07/2020 01:22, John Rumm wrote:
So there I am with a pack of M12 flange nuts and lots of threaded rod,
and I need an 18mm spanner...

Except the first set I try goes from 17mm to 19mm, so I look at my
socket set, same. Another socket set, same. The deep socket set included
with the pneumatic impact wrench, same again!

Had to use an adjustable in the end!



That's the trouble with cheap sets.

Mike