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HATFIELD
| 0-121DB | Attenuator | |
| 1000 | Psophometer | |
| 1001 | Selective Level Meter | |
| 1003 | Level Oscillator | |
| 1008 | dB Meter | |
| 1008A | dB Meter | |
| 1015 | Selective Level Meter | |
| 1017 | Level Measuring Set | |
| 1017A | Level Measuring Set | Analy/Gener |
| 1750 | Balanced Mixer | |
| 2000 | Attenuator | |
| 2002 | Attenuator | |
| 2007 | Step Attenuator | RF |
| 2008 | Step Attenuator | |
| 2010 | Attenuator | |
| 2050 | Attenuator | RF |
| 2052 | Attenuator | |
| 2100 | Attenuator | |
| 2105 | Attenuator | RF |
| 2108 | Attenuator | |
| 2115 | Attenuator | |
| 2118 | Attenuator | |
| 2120 | Attenuator | |
| 2125 | Attenuator | |
| 2130 | Attenuator | |
| 2135 | Attenuator | RF |
| 2138 | Attenuator | |
| 2901 | Decade Resistance Box | |
| 2925 | Decade Resistance Box | Reactive |
| 2975 | Decade Capacitance Box | |
| 2977 | Decade Capacitance Box | |
| 3250 | Hybrid Unit | |
| 3250-03 | Hybrid Unit | |
| 3251-03 | | |
| 610-499 | Attenuator | |
| 610-506 | Attenuator | RF |
| 687A | Switched Attenuator | |
| 74600G | Attenuator | |
| 747 | Milliwatt Test Set | |
| 8002 | Attenuator | |
| 8054 | G.R.I.P.B.Unit | |
| AC605 | Manual Attenuator | RF |
| AE-1 | Attenuator | |
| M30-BNC-75 | Wideband Matched Unit | |
| QA | Attenuator | |
| QA-1 | Attenuator | |
| QE | Attenuator | |
| QP | Attenuator | |
| QP-1 | Attenuator | |
| R1514 | | |
| R167A | | |
| SERIES-Q | Attenuator | |
| SPO-7525 | Psophometer | |
| TDE-2105-0-20DB | Attenuator | |
| TDE-2108-98234 | Attenuator | |
| TDE-2138-A3510 | Attenuator | |
| Z101 | Microwave Counter | |
| Z108 | V.H.F. Attenuator | |
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