Rectangular Refraction Acrylic Block, 100 x 75 x 18mm Subcategory_Microscope Slides with the (Cu) element stamp

with the (Cu) element stamp and a total 1

Carefully lagged nickel-plated copper 3 by 2-inch inner cup inside a 4 by 2

this fan-shaped nylon brush rides a twisted stainless steel handle flexible enough to bend around difficult interior angles

bridging the reach gap between the standard 500mm and the long-haul 1000mm plug-to-plug patch wires

each 20mm on edge with a top hook for suspending in water during Archimedes-principle and buoyancy experiments

Rectangular Refraction Acrylic Block, 100 x 75 x 18mm Subcategory_Microscope Slides with the (Cu) element stampPairs 100 by 75mm with 18mm thickness on an acrylic rectangular refraction block, the wider working face giving longer beam paths for clear refraction angle measurements.