The Optical Theodolite
Test Application
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
| Theodolite | Optical | Laser Optical | ||
|---|---|---|---|---|
| Model | THEO-2 | THEO-6 | THEO-2L | |
|
Telescope |
||||
| Length of sleeve |
150mm |
150mm
|
150mm
|
|
| Effective Aperture |
45mm |
45mm
|
45mm
|
|
| Magnification |
30X |
28X
|
||
| Image |
Erect |
Reverse
|
||
| Resolving Power |
4" |
4"
|
4"
|
|
| Field of view |
1° 30' |
1° 20' |
||
| Minimum Focus |
1.5m |
1.5m
|
1.5m
|
|
|
Angle Measurement |
||||
| Measurement Method |
Incremental Grating Encoder |
|
||
| Horizontal Angle |
Dual |
Single
|
Dual
|
|
| Vertical Angle |
Dual |
Single
|
Dual
|
|
| Accuracy |
±2" |
±6"
|
±2" |
|
| Minimum readout |
1"/5"
|
1"/5" |
||
| Optical Micrometer |
1" |
None
|
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" |
|
| Plate Level Sensitivity |
20"/2mm |
30"/2mm
|
20"/2mm |
|
| Circular Level Sensitivity |
8"/2mm |
8"/2mm
|
8"/2mm
|
|
|
Laser Level |
||||
| Wave Length |
|
635nm |
||
|
Optical Plummet |
||||
| Magnification |
3X |
3X |
||
| Field of View |
5° |
5° |
||
| Focus Range |
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
|
|
| Weight |
9 kg |
9 kg
|
9 kg
|
|
| Tribrach |
Zeiss |
Wild |
||
| Slide Tribrach |
None |
None |
||
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-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°