Basic Botany Models Microscope Slide Set, 25-Piece Length_55mm Aluminum mounting pulley with a

Aluminum mounting pulley with a 2-inch (50mm) diameter wheel and a tapped hole sized for rods up to 13mm

and 38mm lens holder - an inexpensive starter platform for image-formation experiments

Zinc-plated rectangular steel bar-magnet pair packaged with keepers that bridge the poles in storage

Adjustable flash-frequency control across this improved stroboscope lets students isolate periodic motion from rotating machinery

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Basic Botany Models Microscope Slide Set, 25-Piece Length_55mm Aluminum mounting pulley with aCross sectioned across 25 botany slides, root, stem, leaf, and flower preparations support plant anatomy and introductory botany microscopy.