These are the instruments I currently have. All are in working order unless otherwise noted. A few instruments have links to some additional info. I'd be happy to answer any questions about use or repair of these any of these types. This is not a for-sale list.
| Name | Serial | Date | Notes | |
|---|---|---|---|---|
| Ballantine 323 True RMS Voltmeter | 829 | 1960's | analog, 20MHz bw | |
| Ballantine 323 True RMS Voltmeter | 024-6187 | ~1980 | analog, 20MHz bw (not working) | |
| Clarostat 240C Power resistor decade box | 9792 | 1-999,999 ohm | ||
| Clark-Hess 259 Volt-Amp-Watt meter | digital, 170KHz | |||
| Danbridge DR6CDEFGH Decade Resistance Box | 15220 | Cheap GR imitiation | ||
| Data Precision 1350 DMM | 1611 | bench, 3 1/2 digit | ||
| Elgenco 603A Gaussian Noise Generator | 046-00147 | 5Hz-5Mhz, specs like GR 1390, but solid-state | ||
| Fluke 8810A Digital Multimeter | bench, 5 1/2 digit, this unit DC V only | |||
| GR 722-M Precision Condenser | 1550 | 1944 | 100-1000pf variable | |
| GR 1205-B Adjust. Reg. Power Supply | 0-300V @ 200ma, -150V 5ma, 2x 6.3VAC 5A | |||
| GR 1206-B Unit Amplifier | 1704 | >100KHz, 3W into 600 Ohms, 200V P-P | ||
| GR 1208-C Unit Oscillator | 2982 | 65-500MHz, needs tube | ||
| GR 1209-B Unit Oscillator | 4265 | 250-960MHz | ||
| GR 1209-B Unit Oscillator | 3553 | 250-960MHz, has problems | ||
| GR 1209-DL Unit Oscillator | 7408 | 180-600MHz | ||
| GR 1211-B Unit Oscillator | 491 | 0.5-50MHz, 10W | ||
| GR 1215-B Unit Oscillator | 2394 | 50-250MHz | ||
| GR 1216-A Unit IF Amplifier | B100? | + osc + mixer = VHF/UHF measuring receiver | ||
| GR 1481-B Standard Inductor | 1163 | 2mh | ||
| GR 1608-A Impedance Bridge | 1184 | ~1970 | 0.1% accy LCR bridge | |
| GR 1633-A Incremental Inductance Bridge | 539 | measure inductors under bias at audio freqs | ||
| GR 1670-A Magnetic Test Set | 125 | 1935? | special inductance bridge, missing test yoke | |
| HP 209A Oscillator | 1045A04948 | 4Hz-2MHz sine/square, similar HP 204 | ||
| HP 214A Pulse Generator | 1239A08244 | 100V pulse generator | ||
| HP 312A Wave Analyzer | 748-00531 | >1968 | 10KHz-17MHz measuring receiver | |
| HP 350B Attenuator Set | 003-06387 | 600 ohm step attenuator | ||
| HP 353A Patch Panel | 247-01834 | Audio step attenuator and 2 transformers | ||
| HP 425 Micro Volt-Ammeter | 871 | ~1960 | tube analog meter, 10uV-1V 10pA-3ma | |
| HP 3490A Digital Multimeter | 1529A03804 | >1974 | rack, 5 1/2 digit, V, ohm, ACV | |
| HP 6177B DC Current Source | 1149A00939 | 1974 | 500ma 50V | |
| HP 8105A Pulse Generator | dual independent outputs, 30V, offset, pulse burst | |||
| Interstate Electronics P24 Pulse Generator | 0401 | 50MHz, Tr=4ns, bad design, not recommeded. | ||
| Keithley 179 TRMS Digital Multimeter | 14068 | 4 1/2 digit bench meter | ||
| Keithley 412 Micro-Microammeter | 13786 | ~1960 | logarithmic picoammeter 100fA-10nA | |
| Kepco ABC 30-0.3 Power Supply | E22988 | 1960's | 30V 0.3A CC/CV | |
| Kepco ATE 36-3 Power Supply | 1980s? | 36V 3A CC/CV hi prog b.w., hi-z I-source | ||
| Kepco JQE 36-3 Power Supply | H71463 | 1970s? | 36V 3A CC/CV | |
| Leeds & Northrup 4775 resistance decade | 1049461 | <1966 | 1-9999 ohms 0.1% | |
| Military ME-418/PSM-37 Multimeter | 6242 | 1970's | analog transistor VOM | |
| Military ME-418/PSM-37 Multimeter | 1970's | analog transistor VOM | ||
| Military TS352 B/U VOM | 9650B | 50's? | Massive 20Kohm/volt VOM | |
| Military TV7 A/U Tube Tester | 1642:SLE | 1950's | ||
| Military ZM4 B/U Resistance Bridge | 1637 | milliohm bridge, like Leeds & Northrup | ||
| Shallcross 817B Resistance Box | 23430 | 0.01-999.99 ohm | ||
| SKL 308A Variable Electronic Filter | 341 | ~1962 | dual 0.02Hz-20KHz HP/LP filter | |
| Tektronix 31 calculator | 1970's | massive programmable desktop | ||
| Tek 7904A | 500MHz mainframe scope | |||
| Tek 7A26 Dual Trace Amp | B030610 | 200MHz | ||
| Tek 7A13 Differential Comparator | B240394 | 100MHz differential amp, flaky | ||
| Tek 7A22 Differential Amplifier | 1 MHz 10uV differential amp | |||
| Tek 7B80 Time Base | B058715 | Like 7B85 without the delay/delta-time | ||
| Tek 7B85 Delaying Time Base | B083630 | |||
| Tek 7D15 225MHz universal counter/timer | B102661 | |||
| Tek type 134 Current Probe Amplifier | 010610 | w/ P6019 40MHZ AC current probe | ||
| Tek type 131 Current Probe Amplifier | w/ P6016 ~18MHz AC current probe | |||
| Tek P6046 Differential Probe | w/ amp, 50MHz bw | |||
| Texas Instruments 6615 Pulse Generator | 409 | ~1965 | ||
| W+G AR-150 level regulator | precision sine leveler 10Khz-100MHz (problems?) | |||
| Wavetek 144 HF Sweep Generator | 072231 | 10MHz sweep function generator |