Pulley Bench Clamp Fitting, With Nylon Ball Bearing Pulley, Comprising A 50 mm Diameter, Carried On A Two Part Aluminium Frame, Designed Primarily For Clamping To The Edge Of A Bench, Table Etc. With The Pulley Overhanging The Edge And In A Vertical Plane, 110mm
Wave Apparatus - Plastic, Demonstrate Longitudinal And Transverse Waves, Advanced Apparatus Demonstrates Both Longitudinal And Transverse Wave Motions. Consisting Of A Number Of Eccentric Discs Supporting A Series Of Metal Rods Revolving On A Handle