Tribrach Circular Bubble

Circular bubble vial designed for tribrach bases used with GNSS receivers and reflector targets. The bubble helps level the base quickly and accurately before measurement begins, ensuring the instrument or reflector is properly centred over the reference point. This accessory is essential for every surveyor working with total stations or GPS receivers. Please verify base compatibility and bubble size before purchasing. Available from EL EMAN General Contracting and Surveying Office in Alexandria at competitive prices. Contact us for details.

Usage guide

Usage tips: hold the prism vertically over the point using the bubble, enter the correct prism constant in your total station settings to avoid distance errors, and clean the prism glass with a soft cloth.

How to order: tap “Request price” or message us on WhatsApp and we will reply with the current price, availability and delivery time to your governorate.