Description

and an activity guide for introducing circuit construction

Two-speed ticker timer kit printing 25 or 40 dots per second on paper tape via carbon discs

passenger deactivation switches

1 inches while the swivel boss head delivers 360-degree angular positioning and fits rods up to 18mm in diameter

75 inch wall thermometer

Plano-Cylindrical Concave Lens, -17 Diopter, 50 x 50mm Material_Bristle and an activity guide forPlano cylindrical concave lens at 50 by 50mm with 17 diopter power, the cylindrical concave curvature spreading light along a single axis for line focus and divergence demos.

Exchange/Return Notes

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Plano-Cylindrical Concave Lens, -17 Diopter, 50 x 50mm Material_Bristle and an activity guide for

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