Trimble Large Monitoring Prism — 62 mm Establish optical reference points for long-distance monitoring with a 62 mm silver-coated prism and mounting assembly. Designed for repeat observations in structural and deformation monitoring, this target provides a −40 mm prism constant and a central mounting hole for installation on compatible supports. Key Features Support long-distance observations with a 62 mm silver-coated prism . Configure measurements using a −40 mm prism constant . Install on compatible supports using the central hole mount for a 5/8-inch thread or Hex M8 adapter . Maintain a defined setup geometry with an 85 mm target height . Compatible With Trimble total stations supporting passive prism measurements Compatible 5/8-inch threaded mounting supports or Hex M8 adapters