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A fun introduction to 2
to signal generators equipped with 4mm socket outputs
and cheerleading activities
Green mini tennis is the progression stage between orange low compression balls and full pressure yellow balls
Includes four anatomically correct dolls representing different ethnicities and genders
S-Range Scaler-Timer (NBO) A fun introduction to 2A 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