Adding to Art(-n-Marge)'s nicely simplified comments, especially the important point that you must actually weigh the rig piece by piece. However, the pin weight has to be calculated from the other measurements, unless you stand the pin on the scale on a jack of some sort. The pin weight = the weight of the TV with the Monty sitting on it (with the Monty wheels off the scale) less the weight of the TV, or, if using an older scale that weighs one axle at a time, the pin weight = the weight of the TV's rear axle with the Monty sitting on it less the weight of the TV's rear axle alone. The Monty's weight = the pin weight plus the total for the Monty's axles (usually weighed together, anyway). The pin weight is important as a proportion of the Monty's total weight. It cannot be found by weighing the front jacks.
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