Unmaned Surface Vehicles
Echo Sounders
Side Scan Sonars
Underwater Sensor
Acoustic Doppler Current Profilers
Marine positioning equipment
Total Stations
Electronic Theodolites
Digital Levels
Automatic Levels
Handhelds Distance Meters
Prisms/Tripods/Poles/Staffs...
Mapping Drones & Payloads
UAV Applications
Terrestrial Laser Scanners
LiDARs
SLAM LiDAR
Satellite Imagery
Automatic Deformation Monitoring Systems
Environmental Monitoring Systems
Relevant Sensors
Pipe & Cable Locator
VR Simulated Surveying Training Systems
Auto Steering
Track Geometry Measuring Trolley Systems
Automated Tunnel Scanning & Inspection Systems

Model: ML-401
Features
Specification
● World First Dense-ball Bearing
Provide rapid, stable and durable performance.
● All-Weather Dependability
The advanced protection against rainfall and dropping in different environment.
● Laser Pointer to Increase Work Efficiency
The built-in coaxial laser pointers that maximize the efficiency by its 250m working range.
● Code Disk in 360 Degrees
The operation error can be largely reduced by dual-side measurement.
● Power-Saving Technology Saves Battery Costs
Two AA alkaline batteries provide long operating time.

| Accuracy | Laser Pointer | 1/45000 |
| Laser Plumb | 1/2000 | |
| Telescope | Image | Reverse |
| Magnification | 28x | |
| Sight of View | 1°30′ | |
| Effective Aperture | 40mm | |
| Min. Focus | 0.8m | |
| Laser Pointer | Diameter at 50m | 3mm |
| Visible Distance | 70m | |
| Max. Distance at Day | ≥200m | |
| Max. Distance at Night | ≥250m | |
| Wavelength | 635nm | |
| Output Power | 1mw | |
| Error of co-axis | 5″ | |
| Laser Plumb | Diameter at 1.5m | 1mm |
| Max. Distance | 2m | |
| Wavelength | 650nm | |
| Output Power | 1mw | |
| Laser Source | Laser Diode | |
| Others | Plate Vial | 30″/2mm |
| Power Supply | 2pcs AA Battery | |
| Working Hours | 8 Hours | |
| Output Power | 1mw | |
| Error of co-axis | 5″ |
Note: all information above is subject to change without any prior notice.
8581