M42 marco rings set

These rings allow you to shoot pictures from close distance (up to 1:1 scale). Cool items to shoot small things.

Lens Mount: 42x1 mm;
Ring lengths: 7, 14, 28mm.

Here is a table of the rings selection:

Note: table is given for 52.4mm lens with distance scale of 0.65m to inf.

Excellent condition. Plastic case and Russian manual is included.