Usage: training devices mechanics for range expansion of tasks by demonstrating the method increments ob- motion SUMMARY OF THE INVENTION: while rotating the main drive cam disc starts to rotate, placed between the middle and upper plates, and affects disposed in the cutout additional disk spring loaded plunger. To demonstrate the method of the reversed motion caused to rotate sandwiched between the upper and middle plates and the projecting segment of their edges secondary drive, with the main drive remains stationary disc. As a result, the plunger performs a complex motion - rotates around a stationary cam and moves progressively to additional drive recess. Wherein the device elements are made of transparent material and to demonstrate its operation need device (overhead projector) for projecting on a screen, and on average there is a circular plate sg.tka degree sectors, and reference numerals. 3 yl.
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