Popis Our Gliders are ruggedly designed for extensive student use. Before shipment, gliders are floated with an added mass equal to the glider mass to ensure they will float properly in your laboratory. Threaded grooves for #10-24 screws on the top and sides of the vertical section allow addition of accessories without drilling or tapping holes. Gliders have nickel-plated steel bumpers at each end, together with fasteners for springs. We manufacture our gliders to within ±0.1 g of their listed mass.