Lot of 8 Assorted Microscope Focus Blocks 62mm-100mm Head Ports -AS IS-

Lot of 8 Assorted Microscope Focus Blocks 62mm-100mm Head Ports -AS IS-

Nikon (tan), 62mm head port, 24mm stand port, focus travel: missing knob

Nikon (tan), 75mm head port, 24mm stand port, focus travel: okay

Unknown manufacturer (white), 75mm head port, 25mm mount post, focus travel: okay

Unknown manufacturer (grey), 81mm head port, 24mm mount post, focus travel: okay

Unknown manufacturer (white), 82mm head port, 24mm mount post, focus travel: okay

American Optical (blue), 100mm head port, 25mm mount post, focus travel: okay

Bausch & Lomb (black), POD style head port, 15mm mount post

Bausch & Lomb (black), POD style head port, 25mm mount port