Duratech Prism System – 64 mm with Metal Holder and Target The Duratech Prism System is a durable, high-precision solution designed for surveying, construction, and layout applications. Featuring a 64 mm precision prism housed in a rugged all-metal holder, this system delivers reliable performance and consistent accuracy in demanding field conditions. With a selectable 0 or -30 mm prism constant , it supports standard survey configurations and compatibility with common workflows. The included 5/8″-11 adapter ensures seamless integration with prism poles, tribrachs, and mounting systems, making it a versatile choice for a wide range of applications. Key Features • 64 mm precision prism – delivers approximately 5″ accuracy for reliable measurements • 0 / -30 mm prism constant – supports standard survey configurations • Durable all-metal holder and target – built for long-term field use • Polycarbonate tension adjusting knob – smooth, controlled prism positioning • 5/8″-11 adapter – compatible with standard survey poles and mounts • Universal compatibility with leading survey equipment manufacturers • Includes protective prism bag for transport and storage