seatpost diameter

Hi, Is anyone able to tell me the seatpost diameter for the ‘96 Nail Trail and/or Rocky Ridge frames? Thanks in advance :)

Hi all, I have this 21,5 inch Haro Extreme frameset hanging (upside down for future Caustic Soda treatment) but I'm not quite sure about the new seatpost's diameter. Current one is frozen, mingled, ruined, deformed and in general not suitable for precize measurement. Cannot seem to find any...