Boyle-Mariotte's Law Apparatus Science at Home_General Science Supplies a smaller-range counting tool for

a smaller-range counting tool for introductory arithmetic and place-value work

Yellow 150mm 4mm-stackable safety lead rated to 12A with shrouded nickel-plated pins

each plain-shanked for clamping or holding

this two-coil demonstration transformer lets students swap primary and secondary windings to watch step-up and step-down voltage shifts firsthand

hybrid electronic control unit

Boyle-Mariotte's Law Apparatus Science at Home_General Science Supplies a smaller-range counting tool forMarriot style Boyle's Law apparatus on a 250 by 175mm ABS plastic base with a 50mL gas syringe coupled to a pressure gauge for direct piston and gauge P V data collection.