Follow Focus Gear for LOMO 28mm, 35mm, 50mm lens in TEMP mount (79-102-10mm)
This geared ring is purposed to be installed on FM LENS.
Installation is very simple - just put the gear over original ring and secure three set screws by means of included hex key.
If you don't need the gear anymore, removing is very simple as well - loose three set screw and pull the gear off the lens.
Installation/removing takes about one minute, and doesn't require any special skills.
Inner diameter - 88 mm;
Outer diameter -107 mm;
Thickness - 32 mm.
Mod - 0.8 mm (pitch 32).
Weight - 240 g.