Position and clamp template A shown in Figure 24 so that the axis of the slot is substantially vertical and the slot is unobstructed at its top and bottom openings.

Orientate the toy in a position which would most likely permit the entry of the toy through the slot in template A.
Place the toy in the slot so that the force on the toy is only the force due to its mass.
Determine whether the toy passes through the slot or whether any part of the toy protrudes past the base of template A.
Repeat the procedure for toys with nearly spherical, hemispherical or circular flared ends using template B shown in Figure 25.