This image shows Humphrey Barton inspecting the Aries (no.3) onto the transom. It was installed in 1968 in Gibraltar before a transAtlantic. The mounting will be similar for the Haslar gear, as will the size of the wind vane (except Haslars are not ply but white). There is a lot of work to do to get the Haslar gear restored, and that is not frankly a priority at present. I would like to get it tested this season though.