Seco Rear Locking 62 mm Premier Prism Assembly – Flo Yellow/Black Target The Seco 6402-20-FLB Premier Prism Assembly is a rugged, high-visibility solution designed for surveying, control, and layout applications. It features a 62 mm silver-coated prism sealed in a durable canister with an O-ring to protect against water and dust, ensuring consistent performance in harsh field conditions. The 6" x 9" flo yellow and black target provides excellent visibility for efficient sighting at longer distances. A rear stainless steel locking mechanism allows for quick and secure adjustment of the prism and target tilt, improving ease of use in the field. The assembly supports 0 or -30 mm prism constants for compatibility with standard survey workflows and includes a 115 mm tilting axis height for flexible positioning. Key Features • 62 mm silver-coated prism in sealed, O-ring protected canister • 0 / -30 mm prism constant for standard configurations • Rear stainless steel locking mechanism for easy tilt adjustment • 6" x 9" flo yellow/black target for high visibility • Tilting axis height: 115 mm • Durable construction for demanding field conditions