www.pilotballoon.com "the pilot balloon web resource" 

Up

Met. Office Pilot Balloon Slide Rule MK II Instructions

Here are two GIF images of the instruction sheets included with the Mark II pilot balloon theodolite slide rule.
A large image of the slide rule is also available.

Image of instruction sheet that was inclosed with a MK II slide rule

Image of the second page of instructions enclosed with a Mark II slide rule