Eisco Labs Linear Air Track with accessories, 1.5m length. Cost effective system for the study of all aspects of dynamics. Ideal for classroom use. Virtually Friction Free for accurate demonstrations. Designed to accept standard slotted masses. Includes a range of accessories. This kit is designed to provide a cost effective system for the study of all aspects of dynamics in a virtually friction free environment. It is particularly effective in the field of collisions, where conservation of momentum is dramatically demonstrated. The kit contains everything required for a vast array of experiments covering velocity, force and acceleration, potential energy, kinetic energy, conservation of energy, SHM, motion on level and inclined planes. Gliders are designed to accept standard slotted masses for additional loads. It is also supplied with a comprehensive accessory pack to facilitate every type of interaction. Comes with a range of accessories including vehicles with mass attachments, catapults, and buffers. For measurement of gliders speed, standard light gates and timers are required. Supplied without air blower. Product Dimensions: 63.8 x 7.1 x 12.6 inches Weight: 24.9 pounds. Check out my other items.