NIKON AP8 Automatic Level

This AP-8 features an engineer’ s handy automatic level with accuracy of ± 1.5mm in 1km double-run leveling and friction brake for faster operation. Moreover, an endless horizontal drive with control knobs on both sides, water-resistant construction for use under dusty conditions or in light rain, and the option to mount on a flat- or spherical-head tripod all contribute to enhanced operability. Optional diagonal eyepiece lens attachments for use in confined spaces are also available. Telescope - Tube length: 7.5Ý ( 190 mm) ; Image: Erect; Effective diameter of objective lens: 1.2Ý ( 30 mm) ; Magnification: 28x; Field of view: 1° 30' ( 2.6' at 100' ) ; Resolution power: 3.5Ý ; Minimum focusing distance: 2.46' ( .75 m) ; Stadia ratio: 1: 100. Automatic compensator - Type: Wire-hung, air damper; Setting accuracy: ± 0.5Ý ; Range: ± 16' . Level vial sensitivity - Circular level: 10' / 2 mm. Standard deviation ( 1-km double-run leveling) - Without micrometer: ± 1.5 mm. Horizontal circle - Diameter of circle: 4.3Ý ( 110 mm) ; Minimum increment: 1° / 1 g; Reading estimation: 0.1° / 0.1 g. Weight - Instrument: 2.8 lbs.; Case: 2.7 lbs. = = = > >