not 100% sure i used the right terms to list it. it fits on a tripod and send a signal to a receiver unit mounted on a stick. it would replace a optical transit level. i bought it with some other things at an auction and have no use for it. looks to be near new. includes case, 110v and 12v chargers, the sender unit and receiver. no tripod or stick. 400 $ OBO if you're local would consider FTF trades, of guns, snap on tools, or dillon 650.