The small tilting 25mm mini-prism is constructed of yellow Delrin® and operates on two axes just like models 6600-01 and 6600-03. However, this model features a 25mm mini-prism in place of the reflector material. The prism has a -17.5mm offset. The mini-prism allows for ranges up to 2000 feet (600 meters) or more with most instruments. Use with SECO Swiss-style adapters and rebar bolt (6602-01).
\" SECO-7301-50,Seco 16ft 5-Section Aluminum Leveling Rod (10ths),