opininionated
Member
They are 1970's version of Autotrac!! .On top of the bracket was an adjustable pointer with a white dot painted on the end.Once set at the correct angle (for either 30' or 40' bouts - 'cos that's the only 2 bout widths we needed then) if the driver kept the white spot following the last wheeling,the bout width was correct.The white dot was on the end of a pointer so the driver knew he was sitting in exactly the right(critical for the system to be accurate).If he was slightly in the wrong place in the seat he could see the blue paint of the pointer and knew to adjust. See pics below.
You didn't need a satellite and a box full of electronics to make this work .View attachment 260412
View attachment 260414
Reminds me of the dambusters.
Good pictures by the way.