| 616-D Heterodyne Frequency Meter | |
| 1106-A Frequency Transfer Unit | |
| 1106-B Frequency Transfer Unit | |
| 1106-C Frequency Transfer Unit | |
| 616-D Heterodyne Frequency Meter | |
| 696-C Power Supply | |
| 699-A Comparison Oscillator |  |
| 616-D Heterodyne Frequency Meter |  |
| 617-C Interpolation Oscillator |  |
| 619-E Heterodyne Detector |  |
| 614-C Selective Amplifier |  |
| 619-P1 Coil Drawer
612-C Coupling Panel |
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| 1103 Syncronometer
692-B 1-Kc Multivibrator |
 |
| 692-B 10-Kc
Multivibrator
692-B 50-Kc Multivibrator 692-B 100-Kc Multivibrator |
 |
| 698-A Duplex
Multivibrator
Standard Output panel (6 cannon conns.) |
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|
691-C Constant Temperature Unit |
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| 694-C Control
Unit
696-C Power Supply |
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| 1107-A Interpolation Oscillator |  |
Ken says:
This equipment came out of the Midland-Wright Company (a quartz crystal manufacturer in Kansas City) which was formed from the assets of the Crystal Products Co. who went out of business shortly after WWII. The equipment was in use when the owner began working there in 1951. It has not been powered up in about 20 years.
It appears to be have been built in the mid to late 1940s. I have GR manuals/catalogs from 1933, 1948, 1953, and 1961. It is most nearly like the 1948 model, but there are a few differences here and there.