Specification :

Topcon Electronic Total Station GPT 3105N
Length 150mm
Objective Lens Dia. 45mm ( EDM 50mm)
Magnification 30×
Field of View 1° 30’
Min. Focus Distance 1.3m ( 4.9 ft.)
Distance Measuring Range 1 prism: 3, 000m
Reflectorless 1.5m to 350m
Measuring Accuracy ± ( 3mm+ 2ppm× D) m.s.e.
ANGLE MEASUREMENT Absolute Reading
Detecting System H: 2 sides V: 1 side
Minimum Reading 1� / 5�
Accuracy* 2 5�
Display Unit Graphics LCD 160 × 64 Dots with backlight 2 sides
Tilt Sensor Dual axis
Memory Internal Approx. 24, 000 points
Laser Class Class 1 ( for distance measurement)
DIMENSION 336x184x172mm
Instrument ( with battery) 5.3kg ( 11.6 lbs.)
Battery Type Battery BT-52QA
Maximum operating time 45 hours

The GPT-3000LN can measure virtually anything, of any size or material, within a normal working range of 350m.
• Reflectorless distance measurement up to 350M
• Low power consumption
• Small diameter pin-point measurement
• Point guide
• Laser pointer
• Water and dust protection IP66
• Versatile applications including Road