DONT REALLY KNOW WHAT YOU CALL THEM,BUT IT SITS IN THE GROUND AT THE SIDE OF THE ROAD AND TELLS YOU HOW MANY MILES TO A PLACE ..I WOULD SAY ITS GOT TO BE 150yrs OLD?? ITS 3 AN HALFft TALL AND DIAMOND SHAPED AT THE TOP..QUITE NICE REALLY BUT NOT MY CUP OF TEA..YUST THOUGHT IT MAYBEE OF INTEREST TO SOME ONE ON HERE..PLEASE EMAIL ME FOR PICTURES IF INTERESTED..CHEERS.