enum MechanicalVersion { kAM4 = 1, kAM6, kAM2004, kAM2004DX, kAM2005, kAM2006, kAM2007, kAM2008, kAM2009, kAM2010, kAM2011, kAM2012, kAM2013, kAM2014, kAM2015, kAM2016, kAM2018, kAMCURRENT = kAM2018 };