The PSU Base Charles' Law apparatus is a simple way of demonstrating that the volume of a fixed mass of gas is proportional to its absolute temperature. Each unit is supplied with an easy to read oil bead and clear measurements ready to use. * Classpack of 10 * Mercury free * Dimensions 335 x 40mm * Capillary tube 0 to 20cm reading * Thermometer -10°C to +70°C * Supplied singly https://elecena.pl/product/27207573/psu-base-clapsub10-charles-x27-law-classpack-of-10 2024-11-10 https://elecena.pl/product/27207573/psu-base-clapsub10-charles-x27-law-classpack-of-10 2026-07-05