Fletcher Trolley

For performing experiments on acceleration. Light metal track 1720 x 150 mm with levelling feet, felt covered stops at either ends. An aluminium pulley 50 mm diameter, clamp for vibrator and automatic pen release. Aluminium trolley 690 x 80 x 65mm with three wheels mounted on ball bearings, five holes to accommodate cylindrical masses each approx. 350gm. Vibrates 600mm long with clamping marks at 5 and 8 Hz and pen holder with one each wood blocks 150 x 75 x 13mm, 150 x75 x 50mm without pen and paper.