Just slightly smaller than it's big brother, the MC25, the MC20 features a clear baseplate for map use, a luminous bezel with 2 degree resolution, a sighting mirror with small peep sight, a fixed declination correction scale, and side rulers (Imperial/Inch and Metric/cm).
Overall Closed Dimensions: 2.3in x 3.5in x 0.6in Overall Weight: 1.9oz (54g)
