Four Bar Chain Mechanism, Slider Crank Mechanism, Coriollis Component of Acceleration Apparatus, Cam, Analysis Apparatus, Slip and Creep Measurement Apparatus, with Digital Rpm Indicator, Model of Flat Belt Pulley, Model, of Rope Belt Pulley, Model of Chain Drive, Model of Claw, Clutches, Model of Conical Fiction Clutches, Model of Plate, Model of Centrifugal Clutches, Model of, Multiplate Clutches, Model of Hydraulic Brake Unit Single, Drum, Model of Two Brake Drum, Model of Band Brake, Model of Band Block Brake, Model of Internally Expanded, Brake, Model of Dics Brake, Model of Dics Brake Actual, Working, Epicyclicgeartrain Apparatus with Digital Rpm, Indicator, Static and Dynamic Balancing Demonstrator, Motorised Gyroscope with Digital Rpm Indicator