Leica Professional Traverse Set with Optical Plummets

The Leica Professional Traverse Set is a premium geodetic surveying kit configured for high-accuracy forced centering traverse tasks. Featuring GDF322 optical plummet tribrachs and GPR121 professional circular prisms, it ensures maximum stability and millimetric angular precision for demanding total station control networks.

Forced Centering Workflow: Minimizes centering and instrument setup errors by allowing prisms and total stations to be interchanged seamlessly on fixed tribrach bases.
GDF322 Optical Plummet Tribrachs: Features a robust, smooth-turning design with high torsional stiffness and an integrated optical plummet for precise positioning over survey markers.
Premium GPR121 Circular Prisms: Equipped with specialised anti-reflex coatings and metal targets, providing exceptional centering accuracy and maximum range for total station measurements.
GST20-9 Heavy-Duty Wooden Tripods: Utilizes premium wooden legs that offer superior structural stability and resistance to thermal expansion compared to aluminium alternatives.

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FAQs

What components are included in this professional kit?

The full kit typically contains two GST20-9 wooden tripods, two GDF322 tribrachs with optical plummets, two GRT144 carriers, two GPR121 circular prisms with targets, and a GVP738 heavy-duty carrying case.

What is the difference between this Professional kit and the Leica Basic Traverse kit with optical plummets?

The Professional kit upgrades key components to Leica’s highest-tier hardware, featuring GDF322 tribrachs with superior torsional stiffness, GPR121 prisms with anti-reflex coatings, and GST20-9 heavy-duty wooden tripods.

Why are wooden tripods included instead of aluminium ones?

Wooden tripods offer superior stability because wood does not expand or contract with temperature changes as much as aluminium, and it dampens wind vibrations far better.

What is the benefit of a forced centering traverse set?

It allows you to swap your total station with the prism target without moving the tribrach or tripod, completely eliminating instrument centering errors at that station.

What is the prism constant for the included GPR121 prisms?

The Leica GPR121 circular prism has a standard absolute Leica prism constant of 0.0mm, which corresponds to -34.4mm in non-Leica systems.

Are the optical plummets built into the tribrachs or the carriers?

In the Professional Traverse Set, the high-precision optical plummets are integrated directly into the GDF322 tribrach bases.

Is this kit compatible with non-Leica total stations?

Yes, it can be used with any total station brand, though you must account for the specific Leica prism constant of 0.0mm in your instrument settings.

How do I safely transport the traverse set on-site?

The system comes with a rugged GVP738 hard container that has custom foam inserts to securely protect the prisms, carriers, and tribrachs from impact.

What is the purpose of the GRT144 carrier?

The GRT144 carrier provides a standard Leica stub mount for the prism and allows the target to rotate smoothly while maintaining exact height alignment.

How often should the optical plummets be calibrated?

To ensure absolute precision, the plummets should be checked via a quick field rotation test weekly and serviced professionally once a year.