Lumsden Vertical Grinders Types 90ML, 91ML, 90LE, 91LE, 92LE Manual LUMSDEN Vertical Grinders Types 90ML, 91ML, 90LE, 91LE and 92LE: Vertical Automatic Continuous Production Surface Grinders (rotary table fixed vertical wheel head). Manufacturers: Lumsden Models: 90ML 90MLN 91ML 91MLN Contents: Operators Manual Maintenance Manual Parts Manual Electrical Diagrams