Gralab Darkroom Timer Model 300 zinc The Nikon DW-2 6x Focusing

The Nikon DW-2 6x Focusing Finder for the Nikon F2 offers a magnified viewfinder image that is vertically corrected and laterally reversed

and maybe that's all you need to know

most notably on the rivets

see screen capture

The Olympus EE-1 is a red dot sight designed to make supertelephoto photography a bit easier: instead of peering through the lens and desperately trying to figure out what you're pointing at with your 1-degree view

Gralab Darkroom Timer Model 300 zinc The Nikon DW-2 6x FocusingThe classic darkroom timer, with an easy to read dial, switched outlet, loud buzzer and no nonsense direct controls (no beep booping here). Some cosmetic wear, good function.