The HP Model 500A Electronic Frequency Meter
The Model 500A in the 1948 Catalog
| The HP 500A in the HP Memory Project Collection |
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The Model 500A in the 1948 Catalog
| Page 36 of the 1948 Catalog Courtesy of the Hewlett Packard Company |
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| Page 37 of the 1948 Catalog Courtesy of the Hewlett Packard Company |
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