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Tribrach without optical plummet PN: TRWN-21

Tribrach without optical plummet PN: TRWN-21

TheTRWN-21 Tribrach is a Leica GDF121-style surveying tribrach supplied without an optical plummet.

Designed for surveying setups where an optical plummet is not required, the TRWN-21 provides a straightforward tribrach option for field survey equipment and instrument setups.

Its Leica GDF121-style design makes it suitable for surveyors looking for this style of tribrach without paying for an integrated optical plummet they may not need.

$90.00 AUD
$90.00 AUD
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11 in stock
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Key Features

  • Leica GDF121-style tribrach
  • Supplied without an optical plummet
  • Designed for surveying applications
  • Practical option for survey equipment setups where an optical plummet is not required
  • Part number TRWN-21
Specification Details
Product Tribrach Without Optical Plummet
Part Number TRWN-21
Style Leica GDF121 Style
Optical Plummet No
Primary Application Surveying
Product Type Survey Tribrach

What’s Included

  • 1 × TRWN-21 Tribrach Without Optical Plummet

Leica GDF121-Style Tribrach

The TRWN-21 is designed in the style of the Leica GDF121 tribrach, providing surveyors with an alternative tribrach for compatible surveying setups.

Because surveying instruments, carriers and accessories can have different mounting and compatibility requirements, we recommend checking your equipment requirements before ordering.

If you are unsure whether the TRWN-21 is suitable for your setup, contact Terra360 to confirm compatibility before purchasing.


Designed Without an Optical Plummet

The TRWN-21 does not include an optical plummet.

This makes it a practical choice for surveying setups where an integrated optical plummet is not required.

If your surveying workflow requires an optical plummet built into the tribrach, choose a tribrach specifically equipped with that feature instead.

Frequently asked questions

The TRWN-21 is a surveying tribrach designed in the style of the Leica GDF121. It is supplied without an optical plummet.
No. The TRWN-21 is specifically supplied without an optical plummet.
The TRWN-21 is described by Terra360 as a Leica GDF121-style tribrach.
Terra360 describes the TRWN-21 as Leica GDF121 Style. It should therefore not be presented as an original Leica-manufactured GDF121 unless Terra360 has documentation confirming otherwise.
A tribrach forms part of a surveying instrument setup and provides an interface for positioning and levelling compatible survey equipment.
The exact way the TRWN-21 can be used will depend on the instrument, carrier and other equipment in your surveying setup.
The TRWN-21 is intended for surveying applications where a Leica GDF121-style tribrach is required and an integrated optical plummet is not needed.
Specific total station compatibility is not stated on the current Terra360 product page.
Check the mounting and tribrach requirements of your instrument before ordering. If you are unsure, contact Terra360 with your equipment details to confirm compatibility.
The current product information does not specify individual GNSS receivers or GNSS setups that are compatible with the TRWN-21.
Compatibility should therefore be confirmed against the equipment or carrier you intend to use.
The TRWN-21 does not contain an integrated optical plummet. If your surveying setup or centring procedure requires an optical plummet built into the tribrach, you will need a tribrach that includes that feature.
Before ordering, confirm that a Leica GDF121-style tribrach without an optical plummet is appropriate for your surveying equipment and workflow.
If you are uncertain about compatibility, contact Terra360 before purchasing.