This transit and tripod come from a local farm estate.I know nothing about transits.Marked on the side DAVE WHITE MERIDIAN MODEL NO.8080 SER 118090  MFG BY REALIST,INC.MENOMONEEFALLS,WISCONSIN 53051  U.S.A.All adjustment knobs turn freely.When looking thru the glass the phocus works and images appear clear.The little horizontal cross hair in the glass is not straight and looks to droop on one side.I don't know if it can be straightened out or not.The verticle hair is nice and straight.Otherwise this transit looks to be a very nice condition.Comes with the case and a metal tripod.You are bidding on this transit and tripod as is.Any questions email me and I will do my best to answer them for you.