digital counters offered by us are used in G.M. tubes and come with digital read out meter facility. These digit counting systems are also provided with control for reset, start & stop through panel. Some of the features of these counters include: One pro-set-able timer with three digit display & thumb wheel switch G.M. Tube mounted in acrylic stand One radioactive source in lead container Digital multi-meter to read the G.M. Tube voltage