Introductory No. III Microscope Slide Set, 25-Piece Included_Stopcock paired with electroscopes and pith

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

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

Five-hundred-milliamp DC scale on a 315x115mm laminated panel with sealed shunt

Introductory No. III Microscope Slide Set, 25-Piece Included_Stopcock paired with electroscopes and pithPrepared and labeled across 25 slides, the expanded introductory set adds protozoa, bacterial, and tissue detail to support full first year microscopy coursework.