Part Number: 142AS300 (Hold module) Part Number: 142AS301 (Bandpass filter mod) Part Number: 142AS303 (Circuit card) Part Number: 142AS304 (Delay module) Part Number: 142AS305-1 (Decade count) Part Number: 142AS305-2 (Component) Part Number: 142AS306-1 (Decade count store) Part Number: 142AS3062 (No description) Part Number: 142AS307 (Inverter electronic) Part Number: 142AS310 (Electronic modules) Part Number: 142AS315 (Video preamplifier) Part Number: 142AS317 (Sum driver module) Part Number: 142AS319 (Range switching mod) Part Number: 142AS320 (Switching logic)