Graduated 0 to ±90°, 0 to ±100% on a stationary arc. Vernier reads to 10’. Scale pointer has friction movement, locks with turn of thumbscrew. 5x Magnification. Eyepiece slides out to focus cross hairs, bubble. Objective lens slides out to focus target. Stadia ratio 1 to 100. 7-1/2”L. Flat base, brass tube with aluminum arc. Carrying case has belt loop, Velcro® closure.