Introductory No. III Microscope Slide Set, 25-Piece Included_Stopcock Chrome-plated 50mm reading magnifier with

Chrome-plated 50mm reading magnifier with a 10cm focal length

paired with electroscopes and pith balls in classic electrostatic-charging investigations

configured to make and break a circuit at the rhythm of a Morse-code transmission for telegraph-history demonstrations

used to study Snell's law

Two variable 0 to 6V DC outputs paired with two fixed 6V/10W and 12V/20W AC outputs on this power supply controller

Introductory No. III Microscope Slide Set, 25-Piece Included_Stopcock Chrome-plated 50mm reading magnifier withPrepared and labeled across 25 slides, the expanded introductory set adds protozoa, bacterial, and tissue detail to support full first year microscopy coursework.