Demand meter including means for selectively controlling the len
Device and method for measuring a first voltage and a second...
Device with automatic compensation of an ac attenuator
Digital AC meter
Digital color display system
Digital measuring method and apparatus for a quasi-analog measur
Digital meter
Digital multimeter having visible light communication port
Digital multimeter with microprocessor control
Digital multimeter with more closely spaced ranges
Digital multimeter with variable color range indication
Digital panel meter
Digital panel meter
Digital tester
Digital tester with probe storage features
Digital voltmeter
Digital voltmeter with variable color background
Display device for measuring instruments
Dual variable color measuring system