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Topcon Philippines
GM 52 Total Station


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Topcon GM-50 Series total stations – advanced design with superior technology
The GM-50 Series was designed from the ground up to deliver the very latest technological advantages, all in a small, sleek design – you’ll appreciate the advantages from the very first measurement. Featuring a class leading EDM unit, the GM-50 is able to measure up to 4,000 m at 1.5 mm + 2 ppm accuracy, to standard prisms, and can measure in reflector less mode up to 500 m at an incredible 2 mm + 2 ppm accuracy. Measurements are captured faster than ever, and with a beam width of 13 mm (at 30 m), the bright red laser dot pinpoints feature with ease.

Versatile, Economical Solution

The GM-50 Series is smaller, lighter, with increased storage capacity. Offered at an even more cost-efficient option than previous models, it provides your customers the perfect tool for entry-level site layout and surveying.

Bluetooth® Communication

With integrated Bluetooth® capability and internal antenna, the sleek design enables you to deliver measurements cable-free to your data controller.

Tested for toughness

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 chambers. In addition, the various tests against vibration, drop, temperature, and humidity were successfully passed to achieve the best environmental spec. 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.


• Fast and accurate new EDM
• Bluetooth® communications (optional)
• Advanced angle accuracy
• Long battery life – 14 hours
• Rugged, waterproof design with IP66 rating
• 500 m long-range reflectorless measurement
• 50,000 point internal memory

Ultra powerful advanced edm feature for GM 52

Ultra-powerful, advanced EDM

• 500 m non-prism range

• 4,000 m prism range

• Coaxial red laser pointer

• Pinpoint, precise beamspot

Easy access USB 2.0 memory feature for GM 52

Easy access USB 2.0 memory

• Up to 32GB storage

• Environmentally protected

• Compatible with industry standard thumb drives

Advanced angle encoder feature for GM 52

Advanced angle encoder system

• 2” or 5” angle accuracy

• Incorporates exclusive IACS (Independent Angle Calibration System) on 2” and 5” models

Rugged, waterproof design feature for GM 52

Rugged, waterproof design

• Waterproof/dustproof IP66 design handles the toughest environments

• Magnesium-alloy housing providing stable angle accuracy

• Graphic display and alphanumeric key board (standard

GM 52 available on MJAS Zenith Trading


Angle Measurement

Min. Resolution/ Accuracy: 2”/5”

Min. Display: 1”/5” (0.0002 / 0.001gon, 0.005 / 0.02 mil)

Dual-axis compensator: Dual-axis liquid tilt sensor, working range: ±6’

Collimation compensation: On/Off (selectable)

Distance Measurement

Prism EDM Range: 4,000 m

Prism EDM Accuracy: 1.5 mm + 2 ppm

Non-Prism Range: 500 m

Non-Prism Accuracy: 2.0 mm + 2 ppm (0.2 - 200 m)

Measuring Time:

Fine: 0.9 sec

Rapid: 0.6 sec

Tracking: 0.4 sec


Bluetooth Class:  1.5, Operating range: up to 10m

USB flash memory:  (max. 32GB) Serial RS-232C:, USB2.0 (Type A for USB flash memory)


Display: Graphic LCD, 192 x 80 dots, backlight : on/off (Selectable) / Alphanumeric keyboard / 28 keys with backlight

Battery Operation: Up to 14 hours

Dust/Water Rating: IP66

Operating Temp: -20ºC to 60ºC*

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