This article describes a selector for multiple input multichannel scaling which should be used in combination with a multichannel analyzer. It can be used for multipoint measurement

for example

to measure the neutron distribution changing from time to time at different positions in a nuclear reactor

or in a multi-sample mode to measure the half-lifes of some short-lived isotopes. In the selector P-MOS integrated circuit components are adopted and this makes it light in weight and easy to handle.