The advanced SitePro 9300 nitrogen (N2) sealed 0/-30 mm prism system features a single tilting assembly with front lever locking mechanism to secure in position. This hi-performance prism system, precisely positioned in hi-grade aluminum holder ensures accurate measurement and is best for surveying.

• 62mm precision ground glass, up to 2 arc second accuracy
• Nitrogen sealed prism canister prevents condensation on glass lens
• Height of the prism in the holder is 100mm
• Front lever locking mechanism to secure prism in position
• 0/-30mm offset constant
• Dual-sided aluminum target 6.9" x5.5" (17.6 cm x 14cm)
• 5/8-11 stainless steel bayonet adapter (female thread) 
• Includes prism, target and holder asembly, protective case