Hercules 232 – modified development of the Hercules 230 for improved performance. The Hercules 233 was the torquemeter version.
hercuLeS 232 – MODiFIed DEvelOPMEnt oF The HeRCUlEs 230 for ImPROveD PeRfOrmANce. the HeRculES 233 was The tORqUemeteR version.