M42 T2 spacers, shims for adjusting correct backfocus

M42 / T2 sized spacers / shims for adjusting the needed backfocus of a corrector / reducer lens, 0.5mm, 1mm,2mm and 3mm.

379

updated December 31, 2022

Description

With numbers which makes them easier to identify, especially at night.

I printed my set from PETG, 4 perimeters, 100% infill.

Might need a bit post processing to touch up any PETG stringing and smoothen the numbers.

The author marked this model as their own original creation.