13-Piece Balance Weight Set Glass Sets & Apparatus_Organic Chemistry Sets Adjustable-vibrator induction coil producing a

Adjustable-vibrator induction coil producing a 30mm spark from a 6-12V DC input

and redistribution during cell division for biology instruction

Metal-capped half-meter hardwood scale with horizontal-reading graduations

the bench-scale option for younger students or for compact apparatus where a full-size bar would be unwieldy

freezing ripple-tank patterns into stable

13-Piece Balance Weight Set Glass Sets & Apparatus_Organic Chemistry Sets Adjustable-vibrator induction coil producing aThirteen piece mix of nine steel and four brass precision weights from 1 gram to 1 kilogram, displayed on a wooden block for balance calibration and weighing experiments in the lab.