Dimensions: 2.4” x 4.3” x 0.8”. 4 x 90 degree graduation. Scales: inch and mm. Waterproof. Romer scale: 1:24k mile, 1:25k, 1:50k. Magnifier. Turnable housing. Red and black North/South lines. Scale lanyard and slope card. Night use up to four hours. Sighting mirror. Clinometer. Declination adjustment. Clam packed.