5.7inch LCD screen LCD screen produces legible display of the measurement deta and icons for easier identification to select your desired choices for the measurement. Measurement of various lenses Measurement of various lenses, such as single lens, multifocal lens,progressive lens, frame lens and contact lenses, can be performed. Easy lens plate without operating the lever A troublesome lever does not need to be operated. Push the PUSH mark on the lens plate. The lens plate comes out.The lens plate always touches the bottom of the lens without operating the lever.