TOPCON - GTS - 240 Series - Equipo Topográfico


TOPCON - GTS - 240 Series

The Best Value Total Stations Offering Unparalleled Dependability and Functionality

Ideal Tool for Day-to-Day Survey and Layout Tasks

The GTS-240NW series provides unmatched performance and dependability backed by Topcon’s industry-leading technologies. Its IP66 dust/water protection and 2.5” telescope resolving power lead the industry in its class.. The GTS-240NW series of total stations offer every function needed for day-to-day tasks that include the Bluetooth wireless connectivity, the point guide that speeds up stakeout tasks, the laser plummet for quick instrument setup, and many functions.


  • 24-key Alphanumeric Keyboard
  • TopField and Road Onboard Software
  • 2.5” Highest Telescope Resolving Power
  • Point Guide for Stakeout/Layout

  • Laser Plummet for Quick Setup
  • Bluetooth® Wireless Connectivity
  • IP66 Dust and Water Protection
  • 10-Hour Operation per Battery

TopField / Road Software with Alphanumeric Keyboard

The onboard “TopField” and “Road” software dramatically increases efficiency in topo data collection, construction layout, as well as road stakeout tasks. The 24-key alphanumeric keyboard allows for quick inputting of point numbers, codes, attributes, and other necessary data.

Choice of Styles – Onboard Software or Field Controller

With the enhanced functionality, the GTS-240NW allows for data collection and layout works without using an external controller or PC. For the users who prefer to use a field controller, the GTS-240NW provides a Bluetooth capability for a convenient cableless connection.


Length 150mm (5.9 in.)
Objective Lens Dia. 45mm (1.77 in.), EDM 50mm (1.97 in.)
Magnification 30x
Image Erect
Field of View 1°30'
Resolving Power 2.8"
Minimum Focus Distance 1.3m (4.27 ft.)
Measuring Range GPT-243NW, GPT-245NW and GPT-246NW
Mini prism 1,000m (3,300 ft.) / -
1 prism 3,000m (9,900 ft.) / 3,500m (11,500 ft.)
3 prisms 4,000m (13,200 ft.) / 4,700m (15,400 ft.)

Mini prism 900m (3,000 ft.) / -
1 prism 2,000m (6,600 ft.) / 2,300m (7,500 ft.)
3 prisms 2,700m (8,900 ft.) / 4,700m (10,200 ft.)
Measuring Accuracy GPT-243NW, GPT-245NW and GPT-246NW
±(2mm + 2ppm x D)m.s.e.

±(3mm + 3ppm x D)m.s.e.
Measuring time Fine mode 1mm (0.005 ft.) 1.2s (Initial 4.0s)
Fine mode 0.2mm (0.001 ft.) 2.8s (Initial 5.0s)
Coarse mode 1mm/10mm (0.005/0.02 ft.) 0.7s (Initital 3.0s)
Method Absolute Reading
Detecting System GPT-243NW and GPT-245NW
H: 2 sides V: 1 side

GPT-246NW and GPT-249NW
H: 1 side V: 1 side
Minimum Reading GPT-243NW, GPT-245NW and GPT-246NW
1" / 5" (0.2mgon/1mgon)

5" / 10" (1/2mgon)
Accuracy GPT-243NW
3" (1mgon)

5" (1.5mgon)

6" (1.8mgon)

9" (2.7mgon)
Diameter of Circle 71mm (2.8 in.)
Display Graphics LCD 160 x 64 Dots with backlight, 20 characters x 4 lines
Keyboard Alphanumeric, 24 keys
Tilt Sensor GPT-243NW, GPT-245NW and GPT-246NW
Dual axis

Single axis
Method Liquid type
Compensating Range ±3'
Correction Unit 1" (0.1mgon)
Plummet Laser Plummet (Red Laser Diode, Wavelength 633nm, Class 2 laser)
Internal Memory Max. 24,000 points
Interface RS-232C / Bluetooth
Instrument Height 176mm (6.93in.)
Laser Class Class I/1M (EDM), Class 2 (Laser Pointer/Laser Plummet)
Circular Level Sensitivity 10'/2mm
Plate Level Sensitivity GPT-243NW and GPT-245NW

GPT-246NW and GPT-249NW
Dimension 336(H) x 184(W) x 172(L) mm (13.2(H) x 7.2(W) x 6.8(L) in.)
Weight Instrument (with battery) 4.9kg (10.8 lbs)
Plastic Carrying Case 3.4kg (7.5 lbs)
Dust and Water Protection (IEC 60529) IP66 (with BT-52QA installed)
Operating Temperature -20°C to +50°C (-4°F to +122°F)
Battery BT-52QA Operating Time Distance and Angle Measurement-About 10 hrs / About 8.5 hrs w/Bluetooth connection
Angle Measurement Only-About 45 hr


Calle 51 No 5 - 56 Chapinero 
Nuevo +57 1 288 02 03
 +57 1 338 1226
  Bogota Colombia


  Av Balboa, Edificio Plaza 
  (507) 263 3087
  (507) 263 3724


Av. Aramburu No 920 OF 202 
  San Isidro
  (511) 421-6165/222-6102
992724084 / 992722730