I got a really nice 10x loupe at a local tool shop - House of Tools - only $10.00. I also bought a small metal ruler incremented in .5mm , I use the ruler and the loupe to get a accurate enough estimate of pinhole diamters.
Gord
I got a really nice 10x loupe at a local tool shop - House of Tools - only $10.00. I also bought a small metal ruler incremented in .5mm , I use the ruler and the loupe to get a accurate enough estimate of pinhole diamters.
Gord