The Optical Theodolite - THEO Series

The Optical Theodolite - THEO Series, offers user-friendly and accurate surveying measurements at an affordable price. These units are ideal for the measurement of horizontal and vertical angles, used in surveying. It consists of a small telescope mounted so as to move on two graduated circles, one horizontal and the other vertical, while its axes pass through the centre of the circles.

  • The most suitable and durable theodolites for harsh environments and extreme weather conditions (i.e. Hot or Cold temperatures)
  • Automatic Compensation of Vertical Circle Index
  • Color field of view, distinct reading
  • Precise optics, with high quality imaging
  • Best selling and largest theodolite market share, worldwide
  • Two year warranty
THEO-2 (2' Erect Optical Theodolite)
THEO-2 (2' Erect Optical Theodolite)
  • Accuracy: +/-2"
  • Telescope : 30x
  • Image: Erect
  • Optical micrometer (direct reading):1" or 1cc
  • Circle driving: yes
  • Range of operation: +/-2'
  • Setting Error: +/-0.3"
  • Plate level: 20"
  • Telescope for optical plummet: 3X
  • Field of view for optical plummet: 5°
THEO-1 - (0.8' Erect Optical Theodolite)
THEO-1 - (0.8' Erect Optical Theodolite)
  • Accuracy: +/-0.8"
  • Telescope: 30x
  • Image: Erect
  • Optical micrometer (direct reading): 1" or 1cc
  • Circle driving: yes
  • Range of operation: +/-2'
  • Setting Error: +/-0.3"
  • Plate level: 20"
  • Telescope for optical plummet: 3X
  • Field of view for optical plummet: 5°
THEO-1 - (0.8' Erect Optical Theodolite)
THEO-1 - (0.8' Erect Optical Theodolite)
  • Accuracy: +/-0.8"
  • Telescope: 30x
  • Image: Erect
  • Optical micrometer (direct reading): 1" or 1cc
  • Circle driving: yes
  • Range of operation: +/-2'
  • Setting Error: +/-0.3"
  • Plate level: 20"
  • Telescope for optical plummet: 3X
  • Field of view for optical plummet: 5°
THEO-2L (2' Laser Optical Theodolite)
THEO-2L (2' Laser Optical Theodolite)

(Can also be used as plummet or laser level)

  • Accuracy: +/-2"
  • Telescope: 28x
  • Image: Reverse
  • Optical micrometer (direct reading): 1" or 1cc
  • Circle driving: yes
  • Range of operation: +/-2'
  • Setting Error: +/-0.3"
  • Plate level: 20"
  • Wavelength of laser diode: 635nm
  • Telescope for optical plummet: 3X
  • Field of view for optical plummet: 5°

 

Theodolite Optical Laser Optical
Model THEO-2 THEO-6 THEO-1 THEO-2L
Telescope
Length of sleeve
150mm
150mm
 
150mm
150mm
 
Effective Aperture
45mm
45mm
 
45mm
45mm
 
Magnification
30X
28X
 
Image
Erect
Reverse
 
Resolving Power
4"
4"
 
4"
4"
 
Field of view
1° 30'
1° 20'
Minimum Focus
1.5m
1.5m
 
1.5m
1.5m
 
Angle Measurement
Measurement Method
Incremental Grating Encoder
 
 
Horizontal Angle
Dual
Single
 
Dual
Dual
 
Vertical Angle
Dual
Single
 
Dual
Dual
 
Accuracy
±2"
±6"
 
±0.8"
±2"
Minimum readout
1"/5"
 
5"/10"
1"/5"
Optical Micrometer
1"
None
 
1"
1"
Vernier Division
 
1"
 
 
 
Circle Driving
Yes
Yes
Vertical Compensation
Type
Liquid - Capacity
Liquid - Capacity
Compensation Range
±2"
±2"
Vial
Level Accuracy
±0.3"
±1"
 
±0.3"
±0.3"
Plate Level Sensitivity
20"/2mm
30"/2mm
 
20"/2mm
20"/2mm
Circular Level Sensitivity
8"/2mm
8"/2mm
 
8"/2mm
8"/2mm
 
Laser Level
Wave Length
 
635nm
Optical Plummet
Magnification
3X
3X
Field of View
Focus Range
0.5m - infinite
0.5m - infinite
 
0.5m - infinite
0.5m - infinite
 
Dimensions (mm)
48 x 32 x 28
48 x 32 x 28
 
48 x 32 x 28
48 x 32 x 28
 
Weight
9 kg
9 kg
 
9 kg
9 kg
 
Tribrach
Zeiss
Wild
Slide Tribrach
None
None

 

For more information about The Optical Theodolite, please call us at 1.877.884.8378 or Click the button below.