Type

NTS-662

NTS-662R

NTS-665

NTS-665 R

Distance Measurement (20km visible normal condition)

Max distance
Good weather

Singleprism

2.3Km

4.0Km

1.8Km

4.0Km

None
prism

200m

200m

Digisplay

Max9999999.999 m    Min:1 mm

Precision

With prism   22ppm   
Without prism53ppm

Measure time

Fine:1.8s
Track:0.6s

Atmospheric correction

Manual input, Auto correction

Reflection prism correction

Manual input, Auto correction

Angle Measurement

Measuring method

Absolute code

Raster diameter

79mm

Min display unit

1/ 5Selectable

Accuracy

2

5

Detection method 

Horizontal Dual 
Vertical  Dual

Telescope

Image

Erect

Tube length

154mm

Effective aperture

45mm (EDM:50mm)

Magnification 

30×

Field of view

1°30

Minimum Focusing Distance

1m

Resolving Power

3

Auto Compensator

System

Dual axis Liquid-electric

Work range

±3

Accuracy

1

Vial

Plate vial

302mm

Circular vial

102mm

Optical Plummet

Image

Erect

Magnification 

3×

Focusing range

0.5m∼∞

Field of view

5°

Display

Type

Dual sides with graph

On-board Battery

Power supply

Rechargeable Ni-H battery

Voltage

DC 7.2V

Continuous operation time

hours

Size & weight

Dimension

200×180×350

Weight

6.0