It's working principle is based on Thales theorem and the rule that given three non-collinear points it is possible to draw only one circle that has finite radius and passes through all three. According to these rules arm tube is tangential to the groove of LP. Bearing system is as rigid as gimbal, but its friction coefficient is very low. Tonearm's turning part is based on low noise thrust-sleeve bearing. For angular rotation limited rotation sectional torque motor is designed and built.