new products of 10;iV per division, current- probe inputs of 1 mA per division for each of its vertical beams, fibre-optic auto ... There is a built-in electrical overload protection device which allows mains voltage to be put across the input terminals for the cost of one fuse. ... The Type 997.610 hours counter is for monitoring switch-on time of motors and machines. No great ... An ionisation chamber with a volume of only 0 05 ml is used, allowing precision in locating areas of high doserate.