Economy 8.5 ft Pole – Dual Grad – Knob Lock
Item ID: 724200 | Knob-Lock Prism Pole
Economy 8.5 foot Dual Graduation Knob-Lock Prism Pole
The Economy 8.5 ft Dual Grad Knob-Lock Prism Pole is a solid, no-nonsense choice for contractors and survey crews who want a reliable pole without paying premium prices. Built around a simple and proven knob-lock system, this pole gives you smooth height adjustment, secure locking, and clear graduations for everyday layout and survey work.
This 8.5 ft model is ideal for use with standard surveying prisms, mini-prisms, or prism assemblies and works well with most major brands of total stations and robotic instruments. It is a great fit for site layout, grade checking, utility work, boundary surveys, and general construction staking.
Sokkia 724200 Prisim Pole Key Features
• 8.5 ft maximum height
Provides ample reach for most construction and survey tasks without being awkward to carry or handle.
• Dual graduation (dual grad) markings
Includes both feet/10ths and feet/inches or similar dual scales (depending on manufacturer marking format), allowing crews to work in the units they are most comfortable with and quickly read rod height in the field.
• Knob-lock clamping system
Simple twist-knob lock lets you adjust the inner pole quickly, then tighten down securely. This style is easy to operate even with gloves on, and it holds firm without slipping.
• Economy build with solid performance
Designed as an affordable “daily driver” prism pole that still offers dependable rigidity and reasonable durability for regular jobsite use.
• Compatible with common prism assemblies
Standard top mounting thread (typically 5/8-11) accepts most full-size prisms, mini-prisms, and prism assemblies, making it easy to integrate into your existing survey kit.
• Compact and easy to transport
At 8.5 ft extended, the pole still breaks down short enough to ride in the truck, rover case, or back seat without being a hassle.
Sokkia 724200 Typical Uses
This Economy 8.5 ft Dual Grad Knob-Lock Prism Pole is well-suited for:
• Construction layout and staking
• Boundary and topo surveys
• Utility line layout and as-built shots
• Building corners, offsets, and line staking
• Elevation checks with total station or robotic system
• Day-to-day survey and layout work where cost matters but accuracy still counts
Why Choose a Knob-Lock Prism Pole?
The knob-lock design is one of the simplest and most reliable ways to secure a prism pole section:
• Fast and easy to loosen and tighten
• Good clamping force without over-complication
• Less sensitive to dirt and jobsite contamination than more complex mechanisms
• Easy to service or clean if needed
For crews who use their poles every day and want fewer moving parts to fail, knob-lock prism poles are a practical choice.
Sokkia 724200 Summary
If you need a straightforward, budget-friendly prism pole that still performs well in real-world conditions, the Economy 8.5 ft Dual Grad Knob-Lock Prism Pole (Item ID: 724200) is a smart option. It delivers the essentials contractors and surveyors rely on: dual graduations, secure knob-lock adjustment, and compatibility with standard prisms, all at an economy price point.
