Theodolite Nikon NE 101

Specifications: NIKON NE-101 TELESCOPE Effective diameter of objective: 1.77 in ( 45 mm) Magnification: 30x Image: erect Field of view: 1° 20' ( 2.3ft @ 100 ft / 2.3m @ 100 m) Minimum focusing distance: 2.3 ft ( 0.7 m) Stadia multiplier constant: 100 Stadia additive constant: 0 Reticle illuminator: provided ANGLE MEASUREMENT Reading system: photoelectric incremental encoder Circle diameter: 3.1 in ( 79 mm) Unit of reading: degree / gon / mil Minimum digital reading¹ : 5/ 10" , 1/ 2 mgon, 0.02/ 0.05 mil Accuracy ( DIN 18723) 7" / 2 mgon DISPLAY/ KEYPAD Front Type: dot-matrix LCD ( 20 characters x 2 lines) Backlight: 1-level illumination Keypad: 5 buttons Rear NE-101 OPTICAL PLUMMET Magnification: 2.2x Field of view: 5° Focus range: 4.3 ft ( 1.3 m) fixed LEVEL SENSITIVITY Plate level: 40" / 2 mm Circular level: 10' / 2 mm LEVELING BASE Type: detachable NE-101 AMBIENT TEMPERATURE RANGE -4 TO 122 ° F ( -20 to 50 C) ENVIRONMENTAL RATING IP54 DIMENSIONS Instrument: 6.0 x 6.8 x 13.1 in ( 153.5 x 172 x 334 mm) NE-101 WEIGHT Instrument: 9.8 lbs ( 4.5 kg) Carrying case: 5.4 lbs ( 2.5 kg) POWER SUPPLY Battery type: 1.5V alkaline AA x 6 Continuous operating time ( at 68 ° F / 20C) 48 hrs