Course I've encountered Lamson tubes; they were the things at Glasgow where the assistant could drop their pen, resulting in the system having to be dismantled to retrieve it.
At Farnborough, we had its predecessor, the Lamson Hoist. This was a set of rigid vertical wires carrying a metal slider which had a clip on which you clipped FPS, weather reports etc. operated by pulling on a handle which, if you didn't pull hard enough when sending messages to the VCR, didn't engage its stop and fell down on your head.
My overriding memory is of the test pilots of the then prototype Rockwell B1 paying us a visit; they couldn't believe the simplicity of the hoist and stood playing with it for hours!!