Practical test instruments you can build,

1974 1ST PRINTING, 2ND EDITION. PARTIAL list of keywords: VOM Transistor Diode tester; low PIV diode tester; Go No-Go transistor tester; transi-tester; IC tester; transistor gain bandwidth; beta tester; file box transistor tester; transitor parameter tracer; impedance multiplier for VOMs; low-ohm meter; RF voltmeter; relative RF power; milliammeters for RF watts; 100 watt dummy load; RF wattmeter; hot carrier diode wattmeter; wide range VHF-UHF dipper; VHF emitter dipper; dip light; FET gate dipper; VHF UHF wavemeter; regulated powersource; 10 minute timer; test probe; crystal tester; unmarked crystal; coil Q tester; universal dual frequency crystal callibrator; meter evaluator; file box resistance FM Am transmitter receiver aligner; electronic counter; etc.