Sunnen honing machine

Sunnen honing machine, model MBB-1600, serial number 41078. "LENGTH RANGE: BORES UP TO 16″ (400MM) , DEPENDING ON BORE DIAMETER SPINDLE SPEEDS: 200, 250, 320, 400, 500, 640, 800, 1000, 1270, 1600, 2000, 2500 RPM FEATURES: HIGH SPINDLE SPEEDS FOR HONING SMALL DIAMETER BORES; LOW SPINDLE SPEED WITH HIGH TORQUE FOR HONING LARGE DIAMETER BORES; MORE EFFICIENT SMALL BORE HONING OPERATION DUE TO ADEQUATE SPINDLE SPEEDS; INCREASED TORQUE AVAILABLE AT LOW SPINDLE SPEEDS FOR MOE EFFICIENT LARGE BORE HONING OPERATION; LONGER STONE AND MANDREL LIFE PLUS IMPROVED STONE CUTTING ACTION BECAUSE OF THE MORE SENSITIVE CONTROL ON STONE CUTTING PRESSURES; HANDLES ALL HONING WORK ELIMINATES NEED FOR SEPARATE MACHINES TO MEET SPINDLE RPM REQUIREMENTS ON SMALL AND LARGE BORES"