Peter Laidlaw recently unearthed the device shown in the picture below. It was made by Adrian Dean when he and Peter were building a boat, and is designed to be used in conjunction with a half model. You simply roll the ‘compass’ around the boat at the station you are interested in and stop when the pointer lines up with one of the pre-drawn lines. If the note attached to that line relates to your station it will give you useful information, if not move on.
Has anybody else seen anything like this?? If you have send the details to sec@lbt.org.au
