Direct Answer
For GPS (RTK) survey, the Seco 2m Carbon Fiber GPS Pole is the standard equipment — lightweight, non-metallic, and universal 5/8" thread for any GNSS receiver. For traditional differential leveling with an optical or digital level, a fiberglass grade rod like the Crain 5900 is the appropriate choice. These are different tools for different measurement methods.
The term "grade rod" is used differently in GPS survey vs. traditional differential leveling. In GPS survey, the rod is actually a carbon fiber GPS pole that holds the GNSS receiver at a known height above the ground point. In traditional leveling, a grade rod displays graduated marks that the level instrument reads to determine height difference. Understanding which you need is the first step to choosing the right equipment.
The most widely used GPS pole for RTK survey. Lightweight carbon fiber, 2m standard height, aluminum tip for point stability, and universal 5/8" thread for any GPS receiver.
The standard telescoping grade rod for differential leveling work. E-metric graduation, water-resistant fiberglass, and telescoping design for compact transport on large sites.
Modular grade rod system that works with Leica digital levels for barcode reading and with manual reading for backup. The system configuration handles both precise differential leveling and standard construction grade work.
GPS poles, grade rods, and survey accessories from Seco, Crain, and Leica.
Shop at Express Tools ↗Import GPS-collected elevations, generate as-built reports, and track construction elevation data across your project.
Start free with Sitemark →How survey crews log GPS and level data with Sitemark in the field.
Sitemark vs Procore, Raken, Fieldwire, and other field platforms.
Calculate and verify benchmark elevations and differential levels.
For GPS (RTK) survey, a carbon fiber GPS pole — not a traditional grade rod — is the correct equipment. The Seco 2m Carbon Fiber GPS Pole is the most widely used option, compatible with any GNSS receiver. Traditional grade rods are for differential leveling with optical or digital levels.
A GPS pole holds the GNSS receiver at a known height above the point while GPS determines position. A grade rod displays graduation marks that an optical or digital level reads to measure height differences. They serve entirely different measurement methods.
2.0m is the standard GPS pole height for RTK survey. Always measure your actual pole height and enter it in the controller software as the Antenna Height Reduction (AHR). Incorrect AHR is one of the most common sources of systematic GPS elevation error.