Tactile measuring wheels, measuring rollers or tachometers often cause measuring errors and damage to measured objects due to slippage, vibration, contamination and wear. The compact OLV range of linear measurement sensors from SICK offers an accurate, user-friendly and durable solution for such systems. Your decisive advantage: they provide a non-contact, material-independent measurement.These non-contact, material-independent sensors, which are based on the laser-Doppler principle, deliver a typical measurement accuracy of ± 0.05%. The OLV sensors are lightweight, maintenance-free, permanently calibrated and measure practically any surface or color without parameter reconfiguration.