
Dealer for digital construction site solutions with a precision workshop for the repair and calibration of surveying instruments

Alexander Dehnert Industrievertretungen e.K.
Hanover · HanoverNew on Amplifa
About Alexander Dehnert Industrievertretungen e.K.
Alexander Dehnert Industrievertretungen e.K. from Hanover is a provider of digital construction site solutions and operates a precision workshop for surveying instruments. The portfolio includes total stations, GNSS receivers and smart antennas from GeoMax, 3D machine control systems from Unicontrol for excavators and wheel loaders, CAD software from Bricsys as well as satellite measurement systems from Gottlieb Nestle. In addition to sales, consulting and on-site demonstrations directly at the construction site, the company offers training and support for 3D machine control. In the workshop, which has existed since 2003, levels, theodolites, rotating lasers and pipe lasers are repaired, adjusted and calibrated; total stations and GNSS antennas are also tested. Optical instruments are calibrated on collimators with Carl-Zeiss-Jena optics, and lasers on a test station with measuring distances of over 100 m. Instruments can be rented during the repair period. Fields of application lie in construction, civil engineering, surveying and agriculture. In addition, the company offers product personalization through partners.
- Site
- Hannover
- Processes
- Calibration of optical levels and theodolites on collimators, Testing of total stations and GNSS antennas, 3D surveying with BIM technology (digital measurement records, staking out of points/axes), 3D machine control for excavators and wheel loaders (Unicontrol), Sales of digital construction site solutions / BIM technology, Consulting and demonstration directly at the construction site, Training and support for 3D machine control, Calibration of surveying instruments (collimators, test station)
- Materials
- GeoMax Total Stations (Zoom 95, Zoom 75), GeoMax GNSS Systems (Zenith60, Zenith 16, Zenith06), Unicontrol 3D Machine Control, Nestle Satellite Measurement Systems (GNPS-42, GNPS-52), BricsCAD Lite (Bricsys)
- Certificates
- Calibration on collimators (Carl-Zeiss-Jena optics), Test station for rotating lasers and pipe lasers (measuring distances >100 m), Testing of total stations and GNSS antennas
- Industries
- Construction / construction industry, Civil engineering, Surveying, Agriculture, Agriculture (GeoMax field of application)
- 01
Consulting and demonstration at the construction site
- 02
Sales of surveying instruments and machine control
- 03
Installation and commissioning
- 04
Training and support
- 05
Repair and calibration in the precision workshop
- 06
Instrument rental during the repair period
Instruments and systems
GeoMax Total Stations (Zoom 95, Zoom 75)
Total stations for surveying points and areas; Zoom 95 for one-person operation.
GeoMax GNSS Systems (Zenith60, Zenith 16, Zenith06)
GNSS antennas and receivers for positioning and 3D satellite surveying.
Unicontrol 3D Machine Control
GPS machine control for excavators and wheel loaders with Android tablet and sensor technology.
Nestle Satellite Measurement Systems (GNPS-42, GNPS-52)
Satellite positioning systems with GPS, GLONASS, GALILEO and BEIDOU (GNPS-52 RTK fixed: H 10 mm +1 ppm, V 18 mm +1 ppm).
BricsCAD Lite (Bricsys)
DWG-based 2D drawing software for plan editing in building construction.
Locations

Hanover (Platanenhof 18)
DEOffice, sales and industrial representation

Hanover (Sokelantstraße)
DEPrecision workshop for surveying instruments
- Materials
- Surveying instruments from all well-known manufacturers (Leica, Topcon, Trimble, GeoMax, Nestle, Nedo, etc.)
- Collimators with Carl-Zeiss-Jena optics (calibration station for levels and theodolites)
- Test station with Zeiss level for rotating lasers and pipe lasers
- Measuring distances of over 100 m
Products and systems





Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Testing | – | – | – | – | – |
| Calibration of optical levels and theodolites on collimatorsTesting | – | – | – | – | – |
| Testing | – | 100 m (measuring distance) | – | – | – |
| Testing of total stations and GNSS antennasTesting | – | – | – | – | – |
| 3D surveying with BIM technology (digital measurement records, staking out of points/axes)Engineering | – | – | – | – | – |
| 3D machine control for excavators and wheel loaders (Unicontrol)Engineering | – | – | – | – | – |
| Engineering | – | – | – | – | – |
10 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Collimators with Carl-Zeiss-Jena optics (calibration station for levels/theodolites) | – | – | – | – | Hanover (workshop) |
| Test station with Zeiss level (for rotating lasers and pipe lasers, measuring distances >100 m) | Carl Zeiss Jena | – | Measuring distances over 100 m | – | Hanover (workshop) |
| Total station GeoMax Zoom 95 (one-person operation) | GeoMax Zoom 95 | – | – | – | Hanover (sales) |
| Total station GeoMax Zoom 75 with X PAD | GeoMax Zoom 75 | – | – | – | Hanover (sales) |
| GNSS antenna/smart antenna GeoMax Zenith60 | GeoMax Zenith60 | – | – | – | Hanover (sales) |
| GNSS receiver GeoMax Zenith 16 | GeoMax Zenith 16 | – | – | – | Hanover (sales) |
| Smart antenna GeoMax Zenith06 | GeoMax Zenith06 | – | – | – | Hanover (sales) |
| Satellite measurement system Nestle GNPS-42 | Gottlieb Nestle GNPS-42 | – | – | – | Hanover (sales) |
| – | Gottlieb Nestle GNPS-52 | – | – | – | Hanover (sales) |
| – | Unicontrol Unicontrol 3D | – | – | – | Hanover (sales) |
Additional services
Quality and calibration
In the precision workshop, optical levels and theodolites are calibrated on collimators with Carl-Zeiss-Jena optics; rotating lasers and pipe lasers are tested on a test station with a Zeiss level, with measuring distances of over 100 m being simulated.
| Evidence | Hanover (Sokelantstraße) |
|---|---|
| Calibration on collimators (Carl-Zeiss-Jena optics) | |
| Test station for rotating lasers and pipe lasers (measuring distances >100 m) | |
| Testing of total stations and GNSS antennas |
History
- 2003
Start of operations of the precision workshop for surveying instruments (levels, theodolites, rotating lasers and pipe lasers)
- 2016
Offer of product personalization with suppliers Wilpu, B+W, BMI and IDG
- 2022
Expansion of the product portfolio to include 3D machine control systems from Unicontrol for excavators and wheel loaders
- 2024
Addition of the Nestle GNPS-52 satellite positioning system to the product portfolio