"Swing bridge machinery by Sir William Arrol & Co. Ltd": Sir William was knighted for his commitment to his work on both the Forth Bridge and the replacement Tay Bridge, erected following the loss of the previous bridge in the great Tay Bridge Disaster. He was also responsible for knocking up some other little bridges around the country, like london's Tower Bridge, to pick an example...
My friend Sarah made a podcast episode about Sylvia Crowe (credited bottom right on the plaque) and her development of the landscape in this area, with Wendy Tippett, a local landscape architect. It's a great listen if you're familiar with the area, and explains all sorts of things, including the PPILA after Sylvia Crowe's name on the plaque: Past President, Institute of Landscape Artists.
GPS Coordinates:
51.44816, -2.62405
Location: Hotwells
