Thinrad TZJ2-2 Laser Plummet

Dual-Laser Vertical Alignment with Optical Precision

The Thinrad TZJ2-2 Laser Plummet is a professional vertical alignment instrument designed for building construction, engineering surveying, and structural installation. Featuring a 28x optical telescope and upward and downward coaxial laser beams, it enables surveyors to establish and observe vertical reference points with precision.

Its visible laser observation system, integrated downward laser centering mechanism, and dust- and water-resistant construction make it particularly useful for demanding construction environments.

Designed for Accurate and Convenient Operation

Coaxial Upward and Downward Laser Beams

The TZJ2-2 produces two coaxial laser beams for vertical alignment. The laser axes are designed to correspond with the telescope's line of sight, supporting consistent optical and laser observations.

Visible Upper Laser Observation

A dedicated viewing eyepiece allows operators to observe the upward laser point directly, making vertical positioning more convenient during field measurements.

28x Optical Telescope

The telescope offers 28x magnification with a 40 mm objective aperture and a 1°30′ field of view, providing clear observation for precision alignment tasks.

Integrated Downward Laser Centering

The downward laser centering device is built into the instrument's vertical axis, simplifying instrument setup and helping maintain stable centering performance.

Dust- and Water-Resistant Construction

The protected instrument housing helps reduce exposure of internal components to dust, rain, and construction site moisture.

Stable Vertical Axis Design

A specially designed vertical axis support structure contributes to rotational stability and consistent alignment during measurement operations.

Technical Specifications

Brand: Thinrad
Model: TZJ2-2
Instrument Type: Optical Laser Plummet
Telescope Magnification: 28x
Objective Aperture: 40 mm
Field of View: 1°30′
Minimum Focusing Distance: 0.8 m
Telescope Image: Inverted
Plate Level Sensitivity: 30″/2 mm
Laser Wavelength: 635 nm
Visual Laser Observation Range: 70 m
Effective Laser Range in Daylight: ≥200 m
Effective Laser Range at Night: ≥250 m
Laser Output Power: 1 mW
Laser Spot Diameter: 3 mm at 50 m
Laser-to-Sight Axis Coaxial Error: 5″
Vertical Axis-to-Sight Axis Alignment: 5″
Power Supply: Lithium Battery or Dry Batteries
Continuous Operating Time: 8 Hours
Operating Temperature: -10°C to +45°C
Dimensions: 130 × 300 mm
Weight: Approximately 3.3 kg

Where the TZJ2-2 Is Used

High-Rise Construction

Establish vertical control references for transferring survey points between floors during building construction.

Steel Structure Installation

Assist with alignment of structural columns, steel frameworks, and vertical construction elements.

Elevator Shaft Alignment

Support vertical reference measurements for elevator shafts and other narrow structural openings.

Industrial Engineering

Provide vertical alignment references for machinery installation, equipment positioning, and industrial construction.

Building Axis Control

Help survey teams maintain consistent vertical reference axes throughout different stages of construction.

Why Choose the Thinrad TZJ2-2?

The TZJ2-2 combines optical observation with visible laser alignment in a single surveying instrument. Its 28x telescope, coaxial laser system, integrated centering design, and protective housing offer a practical combination of precision and convenience for construction surveyors.

For projects requiring repeated vertical observations, the ability to view the upper laser point directly can simplify field operation and alignment checks.

Thinrad TZJ2-2 Supply from RTKSurvey.com

RTKSurvey.com supplies the Thinrad TZJ2-2 Laser Plummet and other professional surveying instruments to international customers. Contact us for current availability, compatible accessories, and export quotations.

Thinrad TZJ2-2 Laser Plummet