| Newtons4th | N4L | |
| 相角電壓表 | PPA2500 Series Precision Power Analyzers 0.04% basic accuracy Frequency range dc and 10mHz to 2MHz 5 millidegree basic phase accuracy | |
| PPA2510 | Single phase Precision Power Analyzer Phase Angle Voltmeter | |
| PPA2520 | Two phase Precision Power Analyzer Phase Angle Voltmeter | |
| PPA2530 | Three phase Precision Power Analyzer Phase Angle Voltmeter | |
| PPA2540 | Four phase Precision Power Analyzer Phase Angle Voltmeter | |
| PPA2550 | Five phase Precision Power Analyzer Phase Angle Voltmeter | |
| PPA2560 | Six phase Precision Power Analyzer Phase Angle Voltmeter | |
| PPA2610 | Single phase Precision Power Analyzer Rack mount, up to 50Arms. | |
| PPA2620 | Two phase Precision Power Analyzer Rack mount, up to 50Arms. | |
| PPA2630 | Three phase Precision Power Analyzer Rack mount, up to 50Arms. | |
| PPA2640 | Four phase Precision Power Analyzer Rack mount, up to 50Arms. | |
| PPA2650 | Five phase Precision Power Analyzer Rack mount, up to 50Arms. | |
| PPA2660 | Six phase Precision Power Analyzer Rack mount, up to 50Arms. | |
| Phase sensitive multimeter 相角電壓表 | ||
| PSM1700 | Frequency Response Analyzer 10μHz - 1MHz Phase Sensitive Multimeter |
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| PSM1735 | Frequency Response Analyzer 10μHz - 35MHz Phase Sensitive Multimeter | |
| PSM2200 | Frequency Response Analyzer 10μHz – 2.4MHz Phase Sensitive Multimeter |
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| PSM2201 | Frequency Response Analyzer 10μHz – 2.4MHz Phase Sensitive Multimeter |
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| Xitron | 6000 | 相角電壓表 |
| 6010 | 相角電壓表 | |
| 6250 | 相角電壓表 | |