O-Compass Magnifying Lens

This lens has been improved significantly from its earlier version. It attaches to any O-Compass (or MosCompass) with a thumb plate. It sits approximately 3.5 cm above the map, and can easily swivel into place when needed and out of the way when not needed. Improvements include a larger lens; a new nylon lock-nut to reduce loosening at the connection point of lens and post; and a bigger, wider attachment of lens to post, to reduce breakability at the connection point.
Manufacturer: O-Compass