Nikon Digital Theodolite NE-103 : :
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) 5" / 1 mgon

AUTOMATIC VERTICAL COMPENSATOR
Type: liquid-electric detection
Working range: ± 3' ( out-of-range warning provided)

DISPLAY/ KEYPAD

Front
Type: dot-matrix LCD ( 20 characters x 2 lines)
Backlight: 1-level illumination
Keypad: 5 buttons

Rear
Type: dot-matrix LCD ( 20 characters x 2 lines)
Backlight: 1-level illumination
Keypad: 5 buttons

OPTICAL PLUMMET
Magnification: 3x
Field of view: 5°
Focus range: 1.6 ft ( 0.5 m) to infinity
LEVEL SENSITIVITY
Plate level: 30" / 2 mm
Circular level: 10' / 2 mm

LEVELING BASE
Type: detachable
AMBIENT TEMPERATURE RANGE -4 TO 122 ° F ( -20 to 50 C)
ENVIRONMENTAL RATING IP56

DIMENSIONS
Instrument: 6.0 x 6.8 x 13.1 in ( 153.5 x 172 x 334 mm)

WEIGHT
Instrument: 10.1 lbs ( 4.6 kg)
Carrying case: 8.6 lbs ( 3.9 kg)
POWER SUPPLY
Battery type: 1.5V AA Alkaline x 6
Continuous operating time ( at 68 ° F / 20C) 48 hrs