Specification :

Nikon AP/ AC/ AX Series auto levels are compact and lightweight— they weigh just 2.8 lbs— making them convenient and easy to use in the field. Their rugged, water-resistant construction means you can use them in light rain or dusty conditions. AP/ AC/ AX Series auto levels are easy to set up and easy to use. All three models can attach to both flat- and spherical-head tripods, and horizontal tangent knobs with an unlimited range ensure smooth, precise pointing and angular measurement-and you can operate them with either hand. The detachable eyepiece lens lets you use an optional diagonal eyepiece prism for working in extremely close quarters.
AX-2S AC-2S AP-8
TELESCOPE
Tube length: 7.5 in ( 190 mm)
Image: erect
Effective diameter of objective: 1.2 in ( 30 mm)
Magnification: 20x 24x 28x
Resolution power: 4.5" 3.5" 3.5"
Field of view: 1° 30' ( 2.6 ft @ 100 ft)
Minimum focusing distance: 2.46 ft ( 0.75 m)
Stadia ratio: 1: 100
Stadia additive constant: + 10 cm
LEVEL VIAL SENSITIVITY
Circular level: 10' / 2 mm
STANDARD DEVIATION
per 1-km double-run leveling: ± 1.5 mm
AUTOMATIC COMPENSATOR
Type: wire-hung, magnetic damper
Compensation range: ± 16'
Setting accuracy: ± 0.5"
HORIZONTAL CIRCLE
Diameter of circle: 4.3 in ( 110 mm)
Minimum increment: 1° / 1 g
Scale reading ( direct) : 1° / 1 g
Reading by estimation: 0.1° / 0.1 g
WEIGHT
Instrument: 2.8 lbs ( 1.25 kg)