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Specifications

Topcon GTS-Series Total Station Specifications
TELESCOPE
Length
150mm (5.9 inches)
Objective Lens Diameter
45mm (1.77 inches)
Electronic Distance Meter (EDM) 50mm (1.97 inches)
Magnification
30x
Image
Erect
Field of View
1°30'
Resolving Power
2.8"
Minimum Focus Distance
1.3 meter (4.27 feet)
DISTANCE MEASUREMENT
Measuring Range
GTS-243NW, GTS-245NW and GTS-246NW
Mini prism 1,000m (3,300 ft.)
1 prism 3,000m (9,900 ft.)
3 prisms 4,000m (13,200 ft.)

GTS-249NW
Mini prism 900m (3,000 ft.)
1 prism 2,000m (6,600 ft.)
3 prisms 2,700m (8,900 ft.)
Measuring Accuracy
GTS-243NW, GTS-245NW and GTS-246NW
±(2mm + 2ppm x Distance) Mean Squared Error

GTS-249NW
±(3mm + 3ppm x Distance) Mean Squared Error
Measuring Time
Fine Mode 1.0mm (0.005 ft.) = 1.2 seconds
Fine Mode 0.2mm (0.001 ft.) = 2.8 seconds
Coarse Mode 1mm/10mm (0.005/0.02 ft.) = 0.7 seconds
ANGLE MEASUREMENT
Method
Absolute Reading
Detecting System
GTS-243NW and GTS-245NW
Horizontal = 2 sides
Vertical = 1 side

GTS-246NW and GTS-249NW
Horizontal = 1 side
Vertical = 1 side
Minimum Reading
GTS-243NW, GTS-245NW and GTS-246NW
1" / 5" (0.2mgon/1mgon)

GTS-249NW
5" / 10" (1/2mgon)
Accuracy
GTS-243NW
3" (1mgon)

GTS-245NW
5" (1.5mgon)

GTS-246NW
6" (1.8mgon)

GTS-249NW
9" (2.7mgon)
Diameter of Circle
71mm (2.8 inches)
DISPLAY / KEYBOARD
Display Panel
Graphics LCD 160 x 64 Dots with backlight
20 characters x 4 lines
Keyboard
Alphanumeric, 24 keys
TILT CORRECTION
Tilt Sensor
GTS-243NW, GTS-245NW and GTS-246NW
Dual axis

GTS-249NW
Single axis
Method
Liquid Type
Compensating Range
±3'
Correction Unit
1" (0.1mgon)
OTHERS
Plummet
Laser Plummet (Red Laser Diode, Wavelength 633nm, Class 2 laser)
Internal Memory
Maximum of 24,000 points
Interface
Bluetooth and RS-232C Port
Instrument Height
176mm (6.93inches)
Laser Class
Electronic Distance Meter = Class I/1M
Laser Pointer/Laser Plummet = Class 2
Circular Level Sensitivity
10'/2mm
Plate Level Sensitivity
GTS-243NW and GTS-245NW
30"/2mm

GTS-246NW and GTS-249NW
40"/2mm
Dimensions
Length = 172mm (6.8 inches)
Width = 184mm (7.2 inches)
Height = 336mm (13.2 inches)
Weight
Instrument (with battery) = 4.9kg (10.8 lbs)
Plastic Carrying Case = 3.4kg (7.5 lbs)
Dust and Water Protection
IP-66 (with BT-52QA battery installed)
Operating Temperature
-20°C to +50°C (-4°F to +122°F)
Operating Time
Distance and Angle Measurement = 10 hours (8.5 hours with active Bluetooth connection)
Angle Measurement Only = 45 hours