Dimension of Surveyor's Staff

18X24mm

Distance of Surveyor's Staff and Cornea

175mm

Total Mignification

18X      

Objectives Mignification

1.2X      

Eyepieces Mignification

15X

Curvature radius

5.5 ~ 11mm

Diopter

30 ~ 60D

Least Graduate

Radius:0.02mm, Diopter:0.25D

Refractive Index

1.3375

Least Diameter of Measure

r=5.5mm: Φ1.65mm, r=7.5mm: Φ2.3mm, r=11mm: Φ4mm

Astigmatism graduate Range

0 ~ 180°

Astigmatism graduate Alternation

5° 

Illumination Bulb

6V20W Halogen Bulb

Input Voltage

220V/50HZ   (110V/60HZ)

Range of  Rise or Drop of Slipway

0 ~ 30mm

Move Range of  Slipway

Left and Right: 100mm, Front and Back: 90mm

Fluctuate Move Range of  Jaw Part

50mm