Product Pages

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This is a list of products for which there are full articles (as opposed to placeholders/stubs) on this Wiki.

The list can be sorted by clicking in the header titles.

Last Modified Product Description Years Class Series Designers
2024-04-25 10:47:43 AM 874-QUPL 874 to UHF plug adapter (?)−(?) coaxial components GR-874
2024-05-04 7:15:45 AM 107 Variable Inductor 1916−1968 inductance standards 107
2024-04-16 10:53:00 AM 358 Wavemeter 1924−1939 frequency standards and meters
2024-04-16 10:53:06 AM 558 Frequency meter 1928−1929 frequency standards and meters 558
2024-04-16 10:47:53 AM 558-P Frequency meter 1930−1931 frequency standards and meters 558
2024-04-16 4:00:41 PM 509-F 1nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:01:21 PM 509-G 2nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:02:17 PM 509-K 5nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:02:50 PM 509-L 10nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:03:16 PM 509-M 20nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:00:08 PM 509-R 50nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:04:51 PM 509-T 100nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:05:52 PM 509-U 200nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:06:52 PM 509-X 500nF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:07:47 PM 509-Y 1μF, 0.25% standard capacitor 1935−1954 capacitance standards 509
2024-04-16 4:19:40 PM 505-A 100pF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:20:21 PM 505-B 200pF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:21:54 PM 505-E 500pF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:24:17 PM 505-F 1nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:24:04 PM 505-G 2nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:25:23 PM 505-K 5nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:26:24 PM 505-L 10nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:27:16 PM 505-M 20nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:29:04 PM 505-R 50nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:28:52 PM 505-T 100nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:30:07 PM 505-U 200nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-04-16 4:30:58 PM 505-X 500nF, 1% standard capacitor 1935−1965 capacitance standards 505
2024-05-03 9:11:25 PM 107-J Variable Inductor 1935−1968 inductance standards 107
2024-05-03 9:11:57 PM 107-K Variable Inductor 1935−1968 inductance standards 107
2024-05-03 9:14:31 PM 107-L Variable Inductor 1935−1968 inductance standards 107
2024-05-03 9:13:32 PM 107-M Variable Inductor 1935−1968 inductance standards 107
2024-05-03 9:07:23 PM 107-N Variable Inductor 1935−1968 inductance standards 107
2024-05-04 9:54:50 AM 722-D Precision Capacitor 1936−1959 capacitance standards 722
2024-05-04 9:54:53 AM 722-N Precision Capacitor 1939−1959 capacitance standards 722
2024-04-19 8:27:21 PM 740-B Capacitance Test Bridge 1939−1961 impedance measurement
2024-04-16 10:45:10 AM 544-B Megohm bridge 1939−1963 impedance measurement 544
2024-04-16 9:51:55 AM 544-P3 AC power supply 1939−1963 impedance measurement 544
2024-04-19 8:27:48 PM 566-A Wavemeter 1942−1951 frequency standards and meters
2024-04-30 12:04:01 PM 758-A Wavemeter 1942−1954 frequency standards and meters
2024-04-16 11:07:05 AM 783-A Output-power meter 1944−1961 meters
2024-04-19 8:26:59 PM 720-A Frequency Meter 1945−1959 frequency standards and meters
2024-04-30 2:37:51 PM 1631-A Inductance Bridge 1948−1948 impedance measurement
2024-04-16 10:48:23 AM 829-TA Decade attenuator 1948−1951 resistance standards
2024-04-16 10:48:28 AM 829-TB Decade attenuator 1948−1951 resistance standards
2024-04-16 10:48:39 AM 829-TC Decade attenuator 1948−1951 resistance standards
2024-04-05 6:26:15 PM 1140-A UHF Wavemeter 1948−1954 frequency standards and meters
2024-04-25 11:07:10 AM 874-Q7 874 to 774 coax adapter 1948−1959 coaxial components GR-874
2024-04-30 12:07:09 PM 1261-A power supply 1948−1961 power supplies
2024-04-16 10:44:47 AM 1302-A Oscillator 1948−1961 oscillators
2024-04-26 8:54:09 AM 546-C Audio-Frequency Microvolter 1948−1968 meters 546
2024-05-07 11:56:10 AM 716-C capacitance bridge 1948−1970 impedance measurement 716
2024-04-16 12:24:12 PM 874-B Coaxial connector 1948−1978+ coaxial components GR-874
2024-04-25 9:02:04 AM 874-Q2 874 to binding post adapter 1948−1978+ coaxial components GR-874
2024-04-16 10:48:47 AM 1450-TB Decade attenuator 1949−1978+ resistance standards
2024-04-30 12:10:33 PM 1231-P4 adjustable attenuator 1951−1959 amplifiers and detectors 1231
2024-04-30 2:43:18 PM 1231-P5 Adjustable Filter 1951−1959 detectors amplifiers 1231
2024-05-01 1:20:28 AM 1432-A Decade Resistor 1951−1959 resistance standards 1432
2024-05-01 1:29:28 AM 1432-C Decade Resistor 1951−1959 resistance standards 1432
2024-05-01 1:32:32 AM 1432-F Decade Resistor 1951−1959 resistance standards 1432
2024-04-25 11:18:52 AM 874-WM 874 50 Ω terminator 1951−1961 coaxial components GR-874
2024-04-16 4:41:39 PM 1000-P6 Crystal diode modulator 1951−1963 generators 1000
2024-04-16 10:49:05 AM 1021-A Standard signal generator 1951−1965 generators 1021-A
2024-04-16 10:49:22 AM 1021-P1 Power supply 1951−1965 generators 1021-A
2024-04-16 10:49:30 AM 1021-P2 Standard signal generator 1951−1965 generators 1021-A
2024-04-30 2:39:25 PM 1214-A Unit Oscillator 1951−1965 oscillators 1214
2024-05-01 1:36:10 AM 1432-J Decade Resistor 1951−1965 resistance standards 1432
2024-05-01 1:39:24 AM 1432-K Decade Resistor 1951−1965 resistance standards 1432
2024-05-01 1:41:34 AM 1432-L Decade Resistor 1951−1965 resistance standards 1432
2024-05-01 1:44:57 AM 1432-M Decade Resistor 1951−1965 resistance standards 1432
2024-05-01 1:47:59 AM 1432-N Decade Resistor 1951−1965 resistance standards 1432
2024-05-01 7:20:26 PM 1432-P Decade Resistor 1951−1965 resistance standards 1432
2024-05-01 1:55:05 AM 1432-Q Decade Resistor 1951−1965 resistance standards 1432
2024-04-16 10:49:40 AM 1652-A Resistance limit bridge 1951−1968 impedance measurement
2024-04-24 5:42:34 AM 874-VI RF voltmeter 1951−1970 meters
2024-04-16 10:49:01 AM 1001-A Standard signal generator 1951−1973 generators
2024-04-26 3:31:09 PM 874-JR Coax rotary joint 1951−1973 coaxial components GR-874
2024-04-26 4:00:47 PM 874-L10 10cm airline 1951−1973 coaxial components GR-874
2024-04-26 3:59:37 PM 874-L20 20cm airline 1951−1973 coaxial components GR-874
2024-04-26 3:57:55 PM 874-L30 30cm airline 1951−1973 coaxial components GR-874
2024-04-25 9:55:10 AM 874-VR Voltmeter rectifier 1951−1973 coaxial components GR-874
2024-04-25 9:11:54 AM 874-EL Coax right angle adapter 1951−1978+ coaxial components GR-874
2024-04-25 9:47:01 AM 874-G10 3.16× coax attenuator 1951−1978+ coaxial components GR-874
2024-04-25 9:48:27 AM 874-G20 10× coax attenuator 1951−1978+ coaxial components GR-874
2024-04-25 9:48:40 AM 874-K Coaxial coupling capacitor 1951−1978+ coaxial components GR-874
2024-04-25 9:49:03 AM 874-T 874 coax tee 1951−1978+ coaxial components GR-874
2024-04-25 9:57:03 AM 874-WO 874 open-circuit termination 1951−1978+ coaxial components GR-874
2024-04-25 7:11:17 AM 1604-B Comparison bridge 1954−1956 impedance measurement
2024-04-24 3:17:52 PM 722-ME Precision Capacitor 1954−1959 capacitance standards 722
2024-04-30 2:50:08 PM 1217-A Unit Pulser 1954−1961 generator 1217
2024-04-30 2:52:09 PM 1307-A Transistor Oscillator 1954−1961 oscillators
2024-04-12 4:08:38 PM 1862-B Megohmmeter 1954−1961 meters
2024-04-16 10:50:19 AM 1000-P7 Balanced modulator 1954−1963 generators 1000
2024-04-16 10:50:22 AM 1021-P3B Standard signal generator 1954−1965 generators 1021-A
2024-04-24 3:13:55 PM 1206-B Unit Amplifier 1954−1965 detectors amplifiers
2024-04-16 10:50:36 AM 716-CS1 Capacitance bridge 1954−1965 impedance measurement 716
2024-04-16 10:50:40 AM 716-P4 Guard circuit 1954−1965 impedance measurement 716
2024-04-28 12:22:50 PM 908-P1 Synchronous Dial Drive 1954−1965 recorders and dial drives 908
2024-04-16 11:05:51 AM 1216-A Unit IF amplifier 1954−1968 amplifiers and detectors
2024-04-16 10:50:28 AM 1304-B Beat frequency oscillator 1954−1970 oscillators
2024-04-12 4:07:36 PM 1602-B UHF admittance meter 1954−1978+ impedance measurement 1602
2024-04-25 9:57:33 AM 874-QBJ 874 to BNC jack adapter 1954−1978+ coaxial components GR-874
2024-04-25 10:06:48 AM 874-QBP 874 to BNC plug adapter 1954−1978+ coaxial components GR-874
2024-04-25 9:01:31 AM 874-QCJ 874 to C jack coax adapter 1954−1978+ coaxial components GR-874
2024-04-25 9:01:10 AM 874-QCP 874 to C plug coax adapter 1954−1978+ coaxial components GR-874
2024-04-25 9:57:45 AM 874-QHJ 874 to HN jack coax adapter 1954−1978+ coaxial components GR-874
2024-04-16 6:34:47 AM 874-QHP 874 to HN plug coax adapter 1954−1978+ coaxial components GR-874
2024-04-25 9:45:33 AM 874-QNJ 874 to N jack coax adapter 1954−1978+ coaxial components GR-874
2024-04-25 9:45:45 AM 874-QNP 874 to N plug coax adapter 1954−1978+ coaxial components GR-874
2024-04-25 11:08:34 AM 874-QUJ 874 to UHF jack adapter 1954−1978+ coaxial components GR-874
2024-04-25 11:09:18 AM 874-QUP 874 to UHF plug adapter 1954−1978+ coaxial components GR-874
2024-04-25 9:57:59 AM 874-X Coax insertion unit 1954−1978+ coaxial components GR-874
2024-04-30 2:59:17 PM 1214-AS2 Unit Oscillator 1956−1956 oscillators 1214
2024-04-25 7:14:05 AM 1219-A Unit Pulse Amplifier 1956−1961 generators
2024-04-30 2:54:28 PM 1203-B Unit Power Supply 1956−1965 power supplies
2024-04-30 3:04:48 PM 1220-A Unit klystron oscillator 1956−1965 oscillators 1220
2024-04-24 12:21:12 PM 1220-A1 Unit klystron oscillator 1956−1965 oscillators 1220
2024-05-04 10:03:58 AM 1220-A2 Unit klystron oscillator 1956−1965 oscillators 1220
2024-04-30 3:07:35 PM 1230-P1 Component Shield 1956−1965 meters 1230
2024-04-30 3:10:27 PM 1606-A RF Bridge 1956−1965 impedance measurement
2024-04-26 8:39:45 AM 874-LBA Slotted Line 1956−1965 coaxial elements 874
2024-05-05 2:19:03 PM 874-LV Micrometer Vernier Attachment for Slotted Line 1956−1965 coaxial elements 874
2024-05-05 2:20:34 PM 907-R144 Dial Drive 1956−1965 recorders and dial drives 907
2024-04-28 12:26:24 PM 908-P2 Synchronous Dial Drive 1956−1965 recorders and dial drives 908
2024-04-28 1:59:12 PM 908-R96 Dial Drive 1956−1965 recorders and dial drives 908
2024-04-30 7:03:16 PM 1230-A Electrometer and DC amplifier 1956−1968 meters
2024-04-16 10:51:39 AM 1603-A Z–Y impedance bridge 1956−1968 impedance measurement
2024-04-25 7:07:38 AM 1605-A Impedance comparator 1956−1968 impedance measurement
2024-04-25 10:00:25 AM 874-QLJ 874 to HL (LC) jack coax adapter 1956−1970 coaxial components GR-874
2024-04-25 10:00:37 AM 874-QLP 874 to HL (LC) plug coax adapter 1956−1970 coaxial components GR-874
2024-04-25 10:02:51 AM 874-VQ Voltmeter detector 1956−1973 coaxial components GR-874
2024-04-25 11:16:24 AM 874-W100 874 100 Ω coax standard 1956−1973 coaxial components GR-874
2024-04-25 9:47:17 AM 874-G3 1.4× coax attenuator 1956−1978+ coaxial components GR-874
2024-04-25 9:47:34 AM 874-G6 2× coax attenuator 1956−1978+ coaxial components GR-874
2024-04-30 3:18:59 PM 1214-E Unit oscillator 1959−1959 oscillators 1214
2024-04-30 3:14:27 PM 1201-B Unit Regulated Power Supply 1959−1963 power supplies 1201
2024-04-30 3:00:08 PM 1214-D Unit Oscillator 1959−1965 oscillators 1214
2024-04-21 2:52:32 PM 1214-M Unit oscillator 1959−1965 oscillators 1214
2024-04-30 3:29:54 PM 1611-B Capacitance Test Bridge 1959−1965 impedance measurement
2024-04-24 3:03:33 PM 1650-A Portable impedance bridge 1959−1967 impedance measurement Henry P. Hall
2024-04-30 3:17:18 PM 1205-B Adjustable power supply 1959−1968 power supplies
2024-05-05 2:22:13 PM 1210-C Unit oscillator 1959−1970 oscillators
2024-04-30 3:19:58 PM 1607-A Transfer-Function and Immittance Bridge 1959−1970 impedance measurement 1607
2024-04-26 3:41:51 PM 1607-P2 Coax tee 1959−1970 coaxial components GR-874
2024-04-16 10:52:14 AM 1632-A Inductance bridge 1959−1973 impedance measurement
2024-04-24 3:08:30 PM 1650-P1 Test jig 1959−1978+ impedance measurement 1650
2024-04-25 10:03:50 AM 874-QTNJ 874 to TNC jack coax adapter 1959−1978+ coaxial components GR-874
2024-04-25 10:05:54 AM 874-QTNP 874 to TNC plug coax adapter 1959−1978+ coaxial components GR-874
2024-05-04 10:09:14 AM 1134-A Analog to digital converter 1961−1963 frequency standards and meters
2024-04-16 11:04:22 AM 1213-D Unit time/frequency calibrator 1961−1963 frequency standards and meters
2024-04-16 10:52:42 AM 1264-A Modulating power supply 1961−1965 power supplies 1264
2024-05-01 11:46:58 PM 1432-T Decade Resistor 1961−1965 resistance standards 1432
2024-05-01 1:58:05 AM 1432-U Decade Resistor 1961−1965 resistance standards 1432
2024-05-01 2:02:26 AM 1432-X Decade Resistor 1961−1965 resistance standards 1432
2024-04-30 3:21:01 PM 1607-P102 Transistor Mount 1961−1965 impedance measurement 1607
2024-04-27 6:10:04 PM 1607-P111 Transistor Mount 1961−1965 impedance measurement 1607
2024-04-16 10:52:26 AM 1142-A Frequency meter and discriminator 1961−1968 frequency standards and meters
2024-05-02 5:49:59 PM 1607-P601 Ungrounded Component Mount 1961−1968 impedance measurement 1607
2024-05-04 10:13:44 AM 1422-N Precision Capacitor 1961−1970 capacitance standards 1422
2024-05-05 2:27:26 PM 1361-A Oscillator 1961−1973 oscillators
2024-05-03 6:18:26 PM 1232-A Tuned amplifier and null detector 1961−1978+ amplifiers and detectors Albert E. Sanderson Henry P. Hall
2024-04-16 10:52:51 AM 1390-B Random noise generator 1961−1978+ generators
2024-04-16 10:55:01 AM 1840-A Output power meter 1961−1978+ meters
2024-04-28 9:48:11 AM 874-L10L 10cm airline 1961−1978+ coaxial components GR-874
2024-04-25 10:06:26 AM 874-QBJL 874 to BNC jack adapter 1961−1978+ coaxial components GR-874
2024-04-25 11:08:44 AM 874-QUJL 874 to UHF jack adapter 1961−1978+ coaxial components GR-874
2024-04-16 10:55:08 AM 1208-C Unit oscillator 1963−1965 oscillators
2024-04-16 10:55:11 AM 1209-C Unit oscillator 1963−1965 oscillators
2024-05-01 2:04:24 AM 1432-Y Decade Resistor 1963−1965 resistance standards 1432
2024-05-01 2:06:32 AM 1432-Z Decade Resistor 1963−1965 resistance standards 1432
2024-04-30 3:56:50 PM 1025-A Sweep generator 1963−1968 oscillators W. F. Byers Eduard Karplus E. Favre D. Foss W. Montague
2024-04-05 7:03:14 PM 1862-C Megohmmeter 1963−1968 meters
2024-04-29 3:49:41 PM 1232-P1 RF Mixer 1963−1970 detectors amplifiers 1232
2024-04-16 10:55:16 AM 1215-C Unit oscillator 1963−1973 oscillators
2024-04-22 2:20:36 PM 1269-A Power Supply 1963−1973 power supplies
2024-04-25 10:20:07 AM 874-M Coax component mount 1963−1973 coaxial components GR-874
2024-04-16 10:55:14 AM 1211-C Unit oscillator 1963−1978+ oscillators
2024-05-03 6:18:24 PM 1311-A Audio oscillator 1963−1978+ oscillators
2024-04-16 11:04:38 AM 1608-A Impedance bridge 1963−1978+ impedance measurement
2024-05-07 6:36:32 AM 1615-A Capacitance Bridge 1963−1978+ impedance measurement 1615
2024-05-06 2:48:06 PM 1620-A Capacitance-Measurement Assembly 1963−1978+ impedance measurement
2024-04-16 10:55:28 AM 1633-A Incremental inductance bridge 1963−1978+ impedance measurement
2024-04-25 11:04:36 AM 874-G10L 3.16× coax attenuator 1963−1978+ coaxial components GR-874
2024-04-25 11:05:52 AM 874-G6L 2× coax attenuator 1963−1978+ coaxial components GR-874
2024-04-28 9:48:48 AM 874-L20L 20cm airline 1963−1978+ coaxial components GR-874
2024-04-26 3:57:33 PM 874-L30L 30cm airline 1963−1978+ coaxial components GR-874
2024-04-25 11:13:20 AM 874-ML Coax locking component mount 1963−1978+ coaxial components GR-874
2024-04-25 11:12:39 AM 874-TL 874 coax tee 1963−1978+ coaxial components GR-874
2024-04-16 5:06:33 PM 900-Q874 900 to 874 coax adapter 1963−1978+ coaxial components GR-900
2024-04-16 10:55:33 AM 1150-B Digital frequency meter 1965−1965 frequency standards and meters
2024-04-24 3:19:54 PM 1153-A Digital frequency meter 1965−1965 frequency standards and meters
2024-04-21 3:14:28 PM 1201-C Unit Regulated Power Supply 1965−1965 power supplies
2024-04-16 10:56:00 AM 1396-A Tone-burst generator 1965−1965 oscillators
2024-05-01 1:27:04 AM 1432-B Decade Resistor 1965−1965 resistance standards 1432
2024-05-01 2:00:12 AM 1432-W Decade Resistor 1965−1965 resistance standards 1432
2024-04-16 10:55:40 AM 1156-A Decade scaler 1965−1968 frequency standards and meters
2024-04-16 10:55:51 AM 1310-A Oscillator 1965−1968 oscillators
2024-04-16 10:56:04 AM 1398-A Pulse generator 1965−1968 generators
2024-05-05 2:24:26 PM 1360-B Microwave oscillator 1965−1970 oscillators
2024-04-25 7:12:44 AM 1217-C Unit Pulse Generator 1965−1973 generators 1217
2024-05-01 12:51:32 PM 1607-P40 Termination Kit 1965−1973 impedance measurement 1607
2024-04-16 10:56:12 AM 1660-A Inductance measuring assembly 1965−1973 impedance measurement
2024-04-16 10:45:05 AM 1218-B Unit oscillator 1965−1978+ oscillators
2024-05-05 9:16:06 PM 1240-A Bridge Oscillator-Detector 1965−1978+ detectors amplifiers
2024-04-16 10:56:08 AM 1644-A Megohm bridge 1965−1978+ impedance measurement
2024-04-25 10:20:33 AM 874-QMMJ 874 to SMA jack coax adapter 1965−1978+ coaxial components GR-874
2024-04-25 10:24:03 AM 874-QMMP 874 to SMA plug coax adapter 1965−1978+ coaxial components GR-874
2024-04-25 10:24:17 AM 874-TPD Resistive power divider 1965−1978+ coaxial components GR-874
2024-04-25 10:26:14 AM 874-TPDL Resistive power divider 1965−1978+ coaxial components GR-874
2024-04-26 3:38:22 PM 874-U Coax right angle adapter 1965−1978+ coaxial components GR-874
2024-04-25 11:20:19 AM 874-W50B 874 50 Ω terminator 1965−1978+ coaxial components GR-874
2024-04-25 11:20:26 AM 874-W50BL 874 50 Ω terminator 1965−1978+ coaxial components GR-874
2024-04-21 2:47:51 PM 1394-P1 Pulse-Offset Control 1968−1968 generators 1394
2024-04-16 11:01:07 AM 1309-A Oscillator 1968−1973 oscillators
2024-04-16 11:06:05 AM 1236 IF amplifier 1968−1978 amplifiers and detectors
2024-04-16 10:58:04 AM 1003 Standard signal generator 1968−1978+ generators Rudi Altenbach
2024-04-16 11:06:01 AM 1234 Standing-wave meter 1968−1978+ amplifiers and detectors
2024-04-16 11:00:31 AM 1263-C Amplitude-regulating power supply 1968−1978+ power supplies 1263
2024-04-21 5:30:03 PM 1267-B Regulated Power Supply 1968−1978+ power supplies
2024-04-05 6:48:09 PM 1363 VHF oscillator 1968−1978+ oscillators
2024-04-16 11:01:37 AM 1382 Random-noise generator 1968−1978+ generators
2024-04-16 11:02:13 AM 1617-A Capacitance bridge 1968−1978+ impedance measurement
2024-04-16 11:03:07 AM 1650-B Impedance bridge 1968−1978+ impedance measurement Henry P. Hall
2024-04-25 11:04:27 AM 874-G14 5× coax attenuator 1968−1978+ coaxial components GR-874
2024-04-25 11:04:07 AM 874-G14L 5× coax attenuator 1968−1978+ coaxial components GR-874
2024-04-05 7:02:32 PM 1808 AC Millivoltmeter 1970−1970 meters
2024-04-15 1:38:09 PM 1157-B 500 MHz scaler 1970−1978+ frequency standards and meters
2024-04-25 7:08:31 AM 1654 Impedance comparator 1970−1978+ impedance measurement
2024-04-16 11:03:23 AM 1656 Impedance bridge 1970−1978+ impedance measurement
2024-04-22 7:35:57 AM 1863 Megohmmeter 1970−the present day meters
2024-04-22 7:35:58 AM 1864 Megohmmeter 1970−the present day meters
2024-04-26 9:18:27 AM 1657 Digital RLC meter 1976−1978+ impedance measurement Henry P. Hall