Riester ri-former Optimum flexibility for hospitals and practices. The diagnostic station can be individually combined according to requirements and the room situation. Thanks to its innovative construction it is variably extendable to the right and the left. The basic ri-former module is available with one handle and can be supplemented with up to 4 further handle modules. The advantages of the ri-former system can be seen in its versatile combination of options. The ri-former offers the required reliability in hectic everyday hospital and practice life, with its centralized electrical supply. Cost-saving and environmentally friendly independence from conventional or rechargeable batteries is thus guaranteed. Also available with only one handle and extendable up to a maximum of 5 handles with simultaneous removal of a maximum of 3 handles. Optionally available with or without a digital clock. The time of day is easy to read both day and night thanks to the illuminated display. The clock is connected to the power circuit and thus independent of batteries no staff costs involved for changing batteries. LED illumination for otoscopes and 3, 5 V xenon illumination for ophthalmological instruments supply daylight conditions. Optimum electronic efficiency by the use of regulating switch. Constant output voltage independent of the mains supply prolongs the service life of the lamps and guarantees optimum light intensity.