GM-50 Series
GM-50 Series
Geodetic Measurement Station
High Quality, High Return!
• Construction and Survey Application Software
• Fast & Accurate & Powerful Measuring Distance Feature
• 500m Long Range Reflectoress Measurement
• Rugged & Waterproof Design
• Reliable Large Volume Internal Memory
Made in Japan
GM-50 Series
Fast and Powerful Reflectorless EDM
• Fast and accurate pinpointing with phase shift technology.
• Fast distance measurement of 0.9s regardless of object.
• Minimum reflectorless measuring distance - just 30cm.
• Improved collimation with super-bright pointer.
• Smaller EDM beam spot size for minimal distance
measuring error.
• Dependable measuring even at shallow incidence angles.
• Ensures accurate reflective sheet distance measurement.
The ultra-narrow EDM beam can precisely measure walls,
corners, manholes on the road surface, even chain-link
fences and tree branches.
Magnification / Resolving power
Angle measurement
Minimum Display
Accuracy (ISO 17123-3:2001)
Dual-axis compensator /
Collimation compensation
Distance measurement
Laser output*1
Measuring range
(under average
Reflective sheet*4*5
Minimum Display
Mini prism
One prism
Japan Quality Products
(ISO 17123-4:2001)
(D=measuring distance in mm)
Measuring time*8
Reflective sheet*4*5
OS, Interface and Data management
Operating system
Display / Keyboard
We perform the tough environmental tests to
ensure long-term operation even under the
rough site environments.
GM Series total stations are thoroughly
inspected with dust-proof and water-proof test
In addition, the various tests against vibration,
drop, temperature, and humidity were
successfully passed to achieve the best
environmental spec. Also, the measuring
distance accuracy test on base line and the
instrument leveling and angle accuracy test
and adjustment by collimator system ensure
your satisfaction on GM Series product quality.
Standard Package Components
• Main unit • Battery (BDC46C)
• Battery charger (CDC68A)
• Power Cable • Lens cap • Lens hood
• Tool pouch • Precision Screwdriver
• Lens brush • Hexagonal wrench ×2
• Cleaning cloth • Quick Manual
• Laser caution sign-board
• Carrying case • Carrying strap
Control panel location
Data storage
Internal memory
Plug-in memory device
Bluetooth modem (option)*9
Circular level (on tribrach)
Laser (option)
Dust and water protection / Operating temperature
Size with handle
Instrument height
Weight with battery & tribrach
Power supply
Operating time (20ºC)*11
Application program
On board
30x / 2.5"
Length : 171mm (6.7in.), Objective aperture : 45mm (1.8in.) (48mm
(1.9in.) for EDM), Image: Erect, Field of view: 1°30' (26m/1,000m),
Minimum focus: 1.3m (4.3ft.) Reticle illumination: 5 brightness levels
1”/5” (0.0002 / 0.001gon, 0.005 / 0.02mil)
Dual-axis liquid tilt sensor, working range: ±6'
On/Off (selectable)
Reflectorless mode : Class 3R / Prism/sheet mode : Class 1
0.3 to 500m (1,640ft.)
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.)
1.3 to 500m (4.3 to 1,640ft.)
1.3 to 4,000m (4.3 to 13,320ft)
Fine / Coarse : 0.0001m (0.001ft. / 1/8 in.) / 0.001m (0.005ft. / 1/8 in.) (selectable)
Coarse : 0.001m (0.005ft. / 1/8 in.) / 0.01m (0.02ft. / 1 in.) (selectable)
Tracking / Road : 0.01m (0.02ft. / 1 in.)
(2 + 2ppm x D) mm*6
(2 + 2ppm x D) mm
(1.5 + 2ppm x D) mm
0.9s (initial 1.5s)
0.6s (initial 1.3s)
0.4s (initial 1.3s)
Graphic LCD, 192 x 80 dots, backlight : on/off (Selectable) /
Alphanumeric keyboard / 28 keys with backlight
On both faces
On single face
Approx. 50,000 points
USB flash memory (max. 32GB)
Serial RS-232C, USB2.0 (Type A for USB flash memory)
Bluetooth Class 1.5, Operating range: up to 10m *10
Coaxial red laser using EDM beam
6’ (Inner Circle)
10' / 2mm
Magnification: 3x, Minimum focus: 0.5m (19.7in.) from tribrach bottom
Red laser diode (635nm±10nm),
Beam accuracy: <=1.0mm@1.3m, Class 2 laser product
IP66 (IEC 60529:2001) / -20 to +60ºC (-4 to +140ºF)
183(W)x 181(D)x 348(H)mm
183(W)x 174(D)x 348(H)mm
(On both faces)
(On single face)
192.5mm from tribrach mounting surface
Approx. 5.1kg (11.3lb)
Li-ion rechargeable battery BDC46C
Approx. 14hours*12
•REM Measurement •3D Coordinate Measurement
•Resection •Stake Out •Topography Observation
•Offset Measurement •Missing Line Measurement
•Surface Area Calculation •Route Surveying •Point to Line
*1 IEC60825-1:Ed.3.0:2014/ FDA CDRH 21CFR Part1040.10 AND1040.11 *2 Average conditions: Slight haze, visibility about 20km (12
miles), sunny periods, weak scintillation. *3 With Kodak Gray Card White Side (90% reflective). When brightness on measured surface
is 30,000 lx. or less. Reflectorless range/accuracy may vary according to measuring objects,observation situations and environmental
conditions. *4 When the measuring beam’s incidence angle is within 30º in relation to the reflective sheet target. *5 Measuring range
in temperatures of 50 to 60°C (122 to 140°F): RS90N-K: 1.3 to 300m (4.3 to 980ft.), RS50N-K: 1.3 to 180m (4.3 to 590ft.), RS10N-K:
1.3 to 60m (4.3 to 190ft.) *6 Measuring range:0.3 to 200m *7 Face the prism toward the instrument during the measurement with the
distance at 10 m or less. *8 Good conditions: No haze, visibility about 40km (25miles), overcast, no scintillation. *9 Usage approval of
Bluetooth wireless technology varies according to country. Please consult your local office or representative in advance. *10 No obstacles,
few vehicles or sources of radio emissions/interference in the near vicinity of the instrument, no rain. *11 Figures will change depensing on
the operating environment including temperatures and observation conditions. *12 In use of ECO mode. Fine single measurement every
- Specifications may vary by region and are subject to change without notice.
75-1 Hasunuma-cho, Itabashi-ku, Tokyo 174-8580, Japan
Phone: (+81)3-3558-2993 Fax: (+81)3-3960-4214
©2018 Topcon Corporation All rights reserved. P-242-1 GE
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