For the preparation of thin sections for electron microscopy the RMC line of ultramicrotomes has the longest pedigree in the industry. When they became a part of Boeckeler Instruments, a company with over 60 years experience manufacturing precision instruments, the stage was set for us to raise the bar on an already excellent product. The result: Smooth . . . We designed a new cutting engine with exceptional levels of precision tolerance. This design reduces “play” between the parts of the engine to a minimum, virtually eliminating section chatter and susceptibility to external vibration.