Measure support forces with a Force Platform Force Platform PS-2141 Measure the support forces of a crane by connecting it to a Force Platform (PS-2141) using the special Force Platform Structures Bracket (ME-6988). The Force Platform is supported by four individual load cells which combine to measure the total vertical force on the platform. These four readings can also be viewed separately, to measure the unequal forces on the crane supports. Crane built using the Advanced Structures Set (ME-6992A) Force Platform Structures Bracket (ME-6988)