The Sokkia SPO1 Standard Prism 726645 enhances the precision of long-range measurements. It is tightly-sealed to protect its accuracy from the effects of moisture and dust. This standard 63.5 millimeter diameter prism comes in 0 and -30 millimeter offset configurations. It is housed and protected by a hard plastic canister. This tool has an M20 stud and 5/8 - 11 threading and can be used with any holder that has standard female threading.
The standard prism comes with a 1 year limited warranty.