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
Premium Bosshead - Die Casted, Right angle Clamp Holder, Classic Die Cast Alloy, finished in non toxic powder coating, 2 Stainless Steel Thumb Screws, Able to hold rods up to 15 mm in diameter, Holds rods orthogonal (90 degrees) to one another