4.3 Alternative Experimental Procedure
With the jockey weight on the line of symmetry, small magnetic weights are used to trim the assembly to even keel, indicated by a zero reading on the angular scale. The jockey is then moved in steps across the width of the pontoon, the corresponding angle of tilt (over a range which is typically +8°) being recorded at each step. This procedure is then repeated with the jockey traversed at a number of different heights.