SECO 2153-10-BLK Traverse Tribrach Adapter - Black

Overview

The SECO 2153-10-BLK Traverse Tribrach Adapter is designed for traversing, control work, and other precision surveying setups where accurate centering and repeatable rotation are important.

The adapter features a 2.5x twist-focus optical plummet, a 60-second adjustable plate vial, and a precision-machined axis that rotates a full 360°. It is compatible with prisms using a 24.9 mm bayonet base and fits standard three-prong tribrachs.

With an adjustable height range of 100 to 120 mm and specified over-point accuracy of 0.5 mm at 1.5 m, the SECO 2153-10-BLK is well suited for precise prism positioning and traverse applications.

Key Features

• Traverse tribrach adapter
• SECO part number: 2153-10-BLK
• Designed for traversing and precision setups
• 2.5x twist-focus optical plummet
• 60-second adjustable plate vial
• Precision-machined rotating axis
• Full 360° rotation
• Compatible with prisms using a 24.9 mm bayonet base
• Fits standard three-prong tribrachs
• Adjustable height from 100 to 120 mm
• Over-point accuracy of 0.5 mm at 1.5 m
• Black finish

Designed for Traverse and Control Work

The SECO 2153-10-BLK is intended for applications where accurate positioning over a control point is critical.

It is particularly useful for:

• Traverse surveys
• Control networks
• Precise prism setups
• Construction control
• Monitoring work
• Engineering surveys
• High-accuracy total station observations

The rotating design allows the prism to be oriented toward different instrument positions without disturbing the centered setup.

2.5x Twist-Focus Optical Plummet

The integrated optical plummet provides:

• 2.5x magnification
• Twist-focus adjustment

The optical plummet allows the operator to accurately center the adapter and prism assembly over a nail, monument, control point, or other survey reference.

The twist-focus mechanism helps provide a clear view of the point during setup.

60-Second Adjustable Plate Vial

A 60-second adjustable plate vial provides a sensitive reference for precision leveling.

The plate vial allows the operator to refine the setup after initial leveling and can be adjusted as part of routine calibration and maintenance.

For precise traverse work, the vial and optical plummet should be periodically checked to ensure the adapter remains properly adjusted.

Precision-Machined 360° Rotation

The adapter features a precision-machined axis that rotates through:

• 360°

This allows the prism assembly to be turned toward different total station positions while maintaining the same centered location over the survey point.

This is especially useful during traverse observations where multiple instrument stations may sight the same prism setup.

24.9 mm Bayonet Prism Compatibility

The SECO 2153-10-BLK is compatible with prisms using a:

• 24.9 mm bayonet base

This allows the adapter to accept a range of compatible traverse prisms and prism assemblies using the same bayonet connection.

Prism compatibility should be verified before use.

Standard Three-Prong Tribrach Fit

The adapter is designed to fit standard three-prong tribrachs.

This allows it to be installed into compatible tribrach systems commonly used for total station and prism setups.

The tribrach itself is sold separately unless included as part of a complete traverse kit.

Adjustable Height

The adapter provides an adjustable height range of:

• 100 mm to 120 mm

This adjustment allows the prism assembly height to be configured according to the requirements of the survey setup.

The completed prism height should always be verified before it is entered into the total station or field software.

Precise Over-Point Accuracy

SECO specifies the over-point accuracy as:

• 0.5 mm at 1.5 m

This level of centering precision makes the adapter suitable for high-accuracy control and traverse work where small setup errors can affect the final survey results.

Black Finish

The SECO 2153-10-BLK is supplied in Black.

The finish matches other black SECO tribrach and traverse components, including configurations used in complete prism traverse kits.

Ideal Applications

• Traverse surveying
• Control-point establishment
• Control networks
• Precision prism setups
• Construction layout
• Boundary surveying
• Monitoring surveys
• Deformation monitoring
• Engineering surveying
• High-accuracy total station work
• Multi-direction prism observations

Technical Specifications

What’s Included

• 1 × SECO Traverse Tribrach Adapter – Black
• SECO p/n: 2153-10-BLK
• 1 × Integrated 2.5x twist-focus optical plummet
• 1 × Integrated 60-second adjustable plate vial

Tribrach, prism, tripod, total station, and other surveying accessories are sold separately.

Precision Rotating Adapter for Traverse Setups

The SECO 2153-10-BLK combines a 2.5x optical plummet, 60-second plate vial, precision 360° rotation, and 0.5 mm over-point accuracy in a compact traverse adapter. Its 24.9 mm bayonet interface and standard three-prong tribrach compatibility make it a dependable component for precise control and prism setups.