April 17 @ 7:30 pm – 9:30 pm The Weigh-House and its weighing machine by Roger Halse (SCCS Archivist), plus Robert Wheldon’s Hydrostatick Caisson Lock, how it worked, the problems…
April 17 @ 7:30 pm – 9:30 pm The Weigh-House and its weighing machine by Roger Halse (SCCS Archivist), plus Robert Wheldon’s Hydrostatick Caisson Lock, how it worked, the problems…