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GP-193.1 DYNAMICS TROLLEYS The trolley consists of a rectangular wooden body carried upon three low-friction plastic wheels and is supplied with one strong spring plunger and three dowel pegs. Several trolleys may be stacked on top of each other and are held in position by holes drilled underneath which fit over dowel rods placed in corresponding holes in the upper surface of the lower trolley. This enables the effective mass of a trolley to be increased to two or three times its basic mass. Sufficient space is provided on the flat of the trolley for the addition of heavy loads. Dimensions 290x140x90mm.  GP-195.1 TROLLEY RUNWAY This is designed to provide a smooth flat easily inclinable surface for dynamics experiments using trolleys. Wrap resistant wood board, 2450 x 300 x 20mm thick, reinforced with metal angle side rails. Complete with six feet for leveling or inclining the runway, two fixed centrally and two at each end adjustable for height.  GP-196.1 TICKER TAPE TIMER- a. c. Operates on 12 V a. c. The timer employs electromagnet, with spring loaded armature which vibrates above a support table for a carbon paper disc. Paper tape, drawn through guides on the table, is struck by a dotting screw carried on the armature. Additional with extra guides accommodate 4.5mm external diameter rubber tubing for the ‘Pearls in air’ water drop experiment. The peg on the support table is movable to allow maximum use of carbon paper discs. Supplied with 300m roll of tape and carbon paper discs. The ticker tape timer produces dots spaced at 1/50 or 1/60s intervals depending on main frequency.  GP-197.1 TICKER TAPE TIMER- d.c. similar to 196.1, but operates on 12V D.C. Produces dots at 1/50s intervals only. Select Item Description Type Description Spare Parts:- .01 Ticker tape width 9.5mm in rolls approximately 300 metre long. .02 Carbon paper Discs. Pack of 100.  GP-197.4 PAPER TAPE HOLDER AND BASEPLATE This holder provides a convenient means of storing and dispensing the paper tape without risk of the coil collapsing. Comprising a wooden bush which presses into the centre of the tape spool, a pair of card end cheeks and felt discs. The baseplate incorporates a pair of spool support plates and has facilities for mounting either of the tape-Timers. Fitted with resilient rubber feet and finished in durable enable. Supplied WITHOUT tape. Dimensions 325x100x155mm, length x width x height overall, excluding tape holder. Page : 1 | 2 |