C-mount adapters for Olympus BH2 reversed dovetail photoport. These C-mounts are adjustable for parfocality, and they will accept 21mm reticles.
Available in 0.38x, 0.5x, 0.67x and 1x magnifications.
SC38OH 0.38x $900.00
SC50OH 0.5x $570.00
SC67OH 0.67x $550.00
SC10OH 1x $780.00