PlumbRod™ — Survey Rod & Prism Pole Plumb Vial Calibration System

LAUNCHING AUG 15TH, 2026 Is Your Rod Level Actually Level? Most survey rods leave the factory with a 40-minute bubble vial — and that vial drifts. Drops, heat cycles, and daily field use knock it out of adjustment without any visible sign. If your rod vial is off, every shot is off — and you may never know it. The PlumbRod™ gives your shop or office a wall-mounted plumb reference so you can verify and when needed adjust your rod's bubble vial — quickly and easily. True plumb. Every time. Supports both fixed and adjustable 2m rods. How It Works The PlumbRod™ mounts to any wall or door jamb and establishes a mathematically true plumb line using the oldest, most reliable reference in existence — a suspended plumb bob. A 2-meter reference arm means even tiny vial errors translate to a clearly visible bubble offset, giving you a calibration that optical and laser-based methods can't match for simplicity and cost. Mount the upper bracket to your wall at approximately 7 feet Thread your survey rod into the Plumb Post — the system self-plumbs by gravity Place your rod tip in the Calibration Disc and adjust your vial to center No power required. No calibration equipment to calibrate. Key Features Wall-mounted calibration station — set it up once, use it for years True plumb reference via suspended plumb bob — no lasers, no batteries, no drift 2-meter reference arm amplifies vial error for easy visual detection 5/8"-11 UNC threaded Plumb Post — compatible with virtually all survey rods and prism poles Full-circumferential V-groove Calibration Disc — repeatable rod tip placement every time Spring cord lock for fast, tool-free string height adjustment High-strength engineering polymer construction — impact resistant, UV stable, built for shop environments Mounts to wood stud with included hardware Patent Pending — #64/069,477 What's In The Box Upper wall bracket (Bracket #1) with Plumb Post and spring cord lock Lower wall bracket (Bracket #2) with Calibration Disc Mounting hardware (#10 wood screws and washers) Instruction card Choose the Brass Plumb Bob variant above to include a quality brass plumb bob. If you already have one, the base kit is all you need. Compatibility The PlumbRod™ Plumb Post threads onto any standard 5/8"-11 UNC survey rod or prism pole tip — the industry standard thread used by Seco, SitePro, Leica, Topcon, Sokkia, AdirPro, and virtually all other manufacturers. Works with 2-meter fixed-height rods, telescoping prism poles, and GPS rover rods.