This prism is 50mm diameter.
Screwed into the front of the target it has 0mm offset.
Screwed into the back of the target it has -30mm offset.
Comes in padded nylon case.
Price: NZ$80 plus P&P
Extendable pole for prism.
Extends from 1.1m to 2m in length.
Steel point at toe. Adaptor for prism on top.
Metric graduations marked.