Darkroom Test Strip Easle (7 steps)

thingiverse

Calibrating a RH Designs Analyser comes with doing a lot of test strips and prints of step wedges – but now it can be fun! No more need to cut the paper: With this neat little thing, one 10x15 sheet can now hold 7 prints of step wedges to determine contrast values (00 0 1 2 3 4 5) or 7 sets of exposure correction test strips (-3 -2 -1 0 +1 +2 +3). Grooves make it easier to get the latter evenly spaced. There are indents for 20 neodym magnets (6 x 1mm) that attach the base to a magnetic surface and make the slider snap into place at the 7 positions. I don't own a printer, but ordered the prints online. Hence no print settings, sorry. Viel Spaß!