bids are invited for study of various types of brakes and clutches ( q3 ) , study of inversion of double slider chain oldham coupling, scotch yoke and elliptical trammel ( q3 ) , impact testing machine ( q3 ) , study of quick return mechanism and draw velocity and acceleration diagram ( q3 ) , brinell cum rockwell hardness testing machine ( q3 ) , fatigue testing machine ( q3 ) , spring testing machine ( q3 ) , torsion testing machine ( q3 ) , motorized gyroscope apparatus ( q3 ) , static and dynamic balancing apparatus ( q3 ) , cam analysis machine ( q3 ) , to study inversions of four bar chain: coupling rod, beam engine ( q3 ) , to study steering mechanisms; davis and ackerman ( q3 ) total quantity : 13