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27. Technical Data
RTS680 series
Telescope
Length 156mm
Image Erect
Objective aperture Ф45mm
Magnification 30×
Field of view 1°30′
Mini focus distance 1.0ｍ
Reticle illumination 10 brightness levels
Angle measurement
Reading system Absolute encoder
Circle diameter 79mm
Angle unit degree/gon/mil, selectable
Minimum display 0.5″/1″/5″, selectable
0.0001°/0.0005°/0.001°, selectable
0.1mgon/0.2mgon/1mgon, selectable
Detecting mode Both circles adopt diametrical detection
Accuracy 682 2″
685 5″
Distance measurement
Distance unit m/ft, selectable
Measurement range(good condition) Single prism 1 to 3000m
Mini-reading Fine mode 0.1mm/1mm(0.001ft/0.01ft)
Tracking mode 10mm (0.1ft)
Accuracy ±(2mm＋2ppm·D)/ ±(1mm＋1.5ppm·D) optional
Measurement time (Initial: 2.5s)
Prism typical: 1.0-1.5s
Temperature unit / , selectable℃℉
Pressure unit hPa/mmHg/inchHg, selectable
Temperature input range -30℃ to +60 (1 steps)℃℃
Pressure input range 510hPa to 1066hPa(1hPa setps)
Prism constant condition -99.9mm ~ +99.9mm
Refraction and earth curvature correction OFF/0.14/0.2, selectable
Reflecting prism constant correction -99.9mm to +99.9mm
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