Minox offers three different models of monoculars. The Minox MD Compact Monocular is one of the smallest, most compact monoculars available. The MD 7x42 C is quite a bit larger with a 42mm objective lens and built-in compass. The Minox Minoscope is the most impressive, with binocular features packed into a single optic, and a close focus of only 8cm.