final Map<TORQUE, String> mapSymbols = { TORQUE.newtonMeter: 'N·m', TORQUE.dyneMeter: 'dyn·m', TORQUE.poundForceFeet: 'lbf·ft', TORQUE.kilogramForceMeter: 'kgf·m', TORQUE.poundalMeter: 'pdl·m', };