S-Range Scaler-Timer Age 4-5 1 x Slazenger Academy Set

1 x Slazenger Academy Set

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The discharge sphere is supported on a pivoted arm with a handle and is attached to the top of the driving-wheel pillar

S-Range Scaler-Timer Age 4-5 1 x Slazenger Academy SetA general purpose scaler timer suitable for radioactivity counting utilising Geiger Muller tubes ; and as a general purpose millisecond digital timing device with manual or electronic triggering. The bright L. E. D. has six digits, 24mm high, making it suitable for individual use or class demonstration. In the radioactivity mode an adjustable 300 to 500V E. H. T. supply for G. M. tubes. Loudspeaker sockets are also provided for use when an audible