Long Level Bubble for Prism Pole Aluminum Leveling Rod Surveying Grade

The Long Level Bubble for Prism Pole is a precision vial designed for aluminum leveling rods and surveying prism poles. This high-accuracy bubble level ensures your pole is perfectly vertical, eliminating measurement errors caused by tilt. The elongated design provides better visibility and faster centering compared to standard round bubbles, making it ideal for topographic surveys, construction layout, and grade checking.

Constructed from durable acrylic with a clear, easy-to-read liquid, the Long Level Bubble for Prism Pole resists yellowing and cracking under UV exposure. The bubble is housed in a protective aluminum casing that mounts securely to standard 25mm to 32mm diameter poles using adjustable straps or screws. Its long working range allows surveyors to level the pole quickly even on uneven terrain.

The Long Level Bubble for Prism Pole features high sensitivity (typically 20‑30 arc minutes per 2mm), providing reliable vertical reference for prism poles used with total stations or GPS rovers. The bubble’s contrast markings (black lines on white background) are visible in bright sunlight. Installation is simple: attach the bracket to the pole at eye level, then adjust the set screws to calibrate the bubble.

Ideal for land surveyors, civil engineers, and construction crews, this long level bubble enhances the accuracy of every measurement. Whether you are using a carbon fiber or aluminum prism pole, the Long Level Bubble for Prism Pole ensures your rod is plumb, reducing errors in elevation and offset. Upgrade your pole setup with this durable, high-visibility bubble level for professional results.