Double Concave Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Glassware_Glass Flasks Marriot-style Boyle's Law apparatus on

Marriot-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

Four 50 gram brass slotted masses paired with a 50 gram hanger

Outfitted with six drying pegs along a second tier

Four-output regulated DC power supply providing +5V

Comprehensive 15-piece electrostatics set bundling electroscopes

Double Concave Glass Lens, 50mm Diameter, 300-1000mm Focal Length Range Glassware_Glass Flasks Marriot-style Boyle's Law apparatus onRange rated 50mm double concave glass lens spanning 300 1000mm focal lengths, ground polished edges and optically worked surfaces giving long bench divergence flexibility in refraction work.