Screw Efficiency Apparatus- Engineering Lab Training Systems Description and Specifications for Lab Tenders
Screw Efficiency Apparatus- Engineering Lab Training Systems.
Consists of a self contained wall bracket with a steel screw of 3 cm
diameter. The screw has 5 TP.I. 'V' type pitch. Complete with large
force pulley two jokey pulleys, hooks and cords. Weights are
not included