Ray box, simple, safe and sturdy source of projected light for many classic optics experiments, produces parallel convergent rays across a plane horizontal surface and the rays are intense enough to be traced in natural light. Built in solid aluminum extrusion casing, 100-240V 50/60 Hz
Spatula Scoop, Material: Stainless steel, spatula with tear drop scoop on one end and flat edge, Size: Total Length 9.5in, Tear drop scoop measures 0.75in (19mm) Wide and 1.75in(44.45mm) long, Flat side measures 0.38in(9.5mm) wide by 2in (50.8 mm) long, Handle is 0.16in(4 mm) diameter
Specific Gravity Metal Cylinder Set Copper, Zinc, Aluminium And Steel, Four Different Metal Cylinders Each Measuring 38 mm Long X 10 mm In Diameter, Made Of Aluminium, Zinc, Copper And Steel.
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