Total Station Topcon GM 55

Telescope
Magnification / Resolving power
30x / 2.5"
Others
Length : 171mm (6.7in.), Objective aperture : 45mm (1.8in.) (48mm
(1.9in.) for EDM), Image: Erect, Field of view: 130' (26m/1,000m),
Minimum focus: 1.3m (4.3ft.) Reticle illumination: 5 brightness levels
Angle measurement
Minimum Display
1/5 (0.0002 / 0.001gon, 0.005 / 0.02mil)
Accuracy (ISO 17123-3:2001)
2"
5"
Dual-axis compensator /
Dual-axis liquid tilt sensor, working range: 6'
Collimation compensation
On/Off (selectable)
Distance measurement
Laser output
*1
Reflectorless mode : Class 3R / Prism/sheet mode : Class 1
Measuring range
Reflectorless
*3
0.3 to 500m (1,640ft.)
(under average
conditions
*2
)
Reflective sheet
*4*5
RS90N-K: 1.3 to 500m (4.3 to 1,640ft.),
RS50N-K: 1.3 to 300m (4.3 to 980ft.),
RS10N-K: 1.3 to 100m (4.3 to 320ft.)
Mini prism
1.3 to 500m (4.3 to 1,640ft.)
One prism
1.3 to 4,000m (4.3 to 13,320ft)
Minimum Display
Fine / Rapid : 0.0001m (0.001ft. / 1/16 in.) / 0.001m (0.005ft. / 1/8 in.) (selectable)
Tracking / Road : 0.001m (0.005ft. / 1/8 in.) / 0.01m (0.02ft. / 1/2 in.) (selectable)
Accuracy
*2
Reflectorless
*3
(2 + 2ppm x D) mm
*6
(ISO 17123-4:2001)
Reflective sheet
*4*5
(2 + 2ppm x D) mm
(D=measuring distance in mm)
Prism
*7
(1.5 + 2ppm x D) mm
Measuring time
*8
Fine
0.9s (initial 1.5s)
Rapid
0.6s (initial 1.3s)
Tracking
0.4s (initial 1.3