For determination of the coefficient of kinematic & static friction, mechanical advantage & efficiency of an inclined plane etc.
It is made of a polished hardwood board hinged at one end to wooden base board. A plastic pulley 38mm in U-bracket is mounted on the other end of inclined plane which supports mass which is suspended from the thread with other end tied to the object under observation. The index pointer fixed to the inclined surface moves along the arc scale graduated 0-45º×1º fitted to the baseboard & gives its angle of inclination. 2 wooden block sliders for friction study, 1 metal roller in bracket with hook & one weight pan with lightweight cord for suspension.