360 Degree Mini Prism with Pole, Hook, Level Bubble, GRZ101 Surveying Prism for Leica ATR Total Station, 1/4-20 Thread. Prism constant:+30mm, Copper Coated film. 1/4×20 external/male thread on one side. 1/4×20 internal/female thread on the other side. 1.2m/47.2 Ground Rod.
