SECO 5500-21 12 ft TLV Prism Pole with Adjustable Tip

Overview

The SECO 5500-21 12 ft TLV Pole is a durable, adjustable survey pole designed for prism positioning, robotic total station work, construction layout, and general field surveying.

Its two-section aluminum design extends to 11.81 ft (3.60 m) and collapses to 5.18 ft (1.58 m) for transportation and storage. SECO’s TLV locking mechanism includes a soft rubber knob that remains easy to operate while wearing gloves.

A 40-minute level vial is built directly into the lock, while dual graduations in decimal feet and centimeters help operators set and verify the working height. The adjustable tip provides additional flexibility for precise survey-pole setups.

Key Features

• Professional adjustable TLV survey pole
• SECO part number: 5500-21
• Two-section pole design
• Maximum extended length of 11.81 ft
• Maximum extended length of 3.60 m
• Closed length of 5.18 ft
• Closed length of 1.58 m
• SECO TLV locking mechanism
• Soft rubber tightening knob
• Easy to operate while wearing gloves
• Integrated 40-minute level vial
• Vial built directly into the TLV lock
• Dual graduations in 0.01 ft and centimeters
• Adjustable pole tip
• Powder-coated aluminum construction
• Silk-screened measuring graduations
• Wear-resistant design for long service life
• Red and white finish

Two-Section Adjustable Design

The SECO 5500-21 uses two adjustable sections to provide an extended working height of 11.81 feet, or 3.60 meters.

Its additional reach makes it suitable for elevated prism setups, measurements across grade changes, deep excavation work, and other applications where a standard-height pole may not be sufficient.

When closed, the pole measures 5.18 feet, or 1.58 meters, for easier transportation and storage.

SECO TLV Locking Mechanism

The TLV locking mechanism secures the adjustable pole at the selected working height.

A soft rubber knob provides a comfortable gripping surface and remains easy to tighten or loosen while wearing work gloves. This glove-friendly design supports efficient pole adjustment in construction, cold-weather, and other demanding field conditions.

Integrated 40-Minute Vial

A 40-minute level vial is built directly into the TLV lock.

The vial provides a visual reference for keeping the pole vertical over a control point, monument, stake, nail, or other survey location. Maintaining a plumb setup helps position the mounted prism or accessory directly above the intended measurement point.

Dual 0.01 ft and Centimeter Graduations

The SECO 5500-21 includes dual measuring scales:

• Decimal feet graduated to 0.01 ft
• Metric graduations in centimeters

These graduations allow the operator to set and verify the pole height before entering it into a total station, data collector, or field software.

Adjustable Tip

The pole includes an adjustable tip for fine-tuning the overall setup height.

This allows the pole configuration to be adjusted for specific prism-height requirements, surface conditions, and field procedures. The final height should always be confirmed before collecting measurements.

Powder-Coated Aluminum Construction

The pole is manufactured from aluminum and finished with a durable powder coating.

Silk-screened graduations provide clear measurement references, while the wear-resistant construction is designed for repeated surveying and construction use.

The red and white finish improves visibility across active jobsites and makes the pole easier to identify among other field equipment.

Ideal Applications

• Robotic total station surveying
• Conventional total station surveying
• Prism positioning
• Construction layout
• Grade staking
• Boundary surveying
• Topographic surveying
• Utility layout
• Excavation measurements
• Engineering fieldwork
• Extended-height survey setups

Technical Specifications

What’s Included

• 1 × SECO 12 ft TLV Pole – Red and White
• SECO p/n: 5500-21
• 1 × Integrated 40-minute level vial
• 1 × Adjustable tip

Prism, prism adapter, bipod, carrying case, and other surveying accessories are sold separately.

Extended-Reach TLV Pole for Professional Fieldwork

The SECO 5500-21 combines an 11.81-foot maximum reach, wear-resistant aluminum construction, dual graduations, an adjustable tip, and a glove-friendly TLV lock. Its integrated 40-minute vial makes it a practical choice for precision total station and construction layout work.