The HP Model 100B Secondary Frequency Standard

| The HP 100B in the HP Memory Project Collection |
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| Click-Here for High-Resolution Display of this picture = 1200 pix @ 300 ppi |
| Page 30 of the 1948 Catalog Courtesy of the Hewlett Packard Company |
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| Page 31 of the 1948 Catalog Courtesy of the Hewlett Packard Company |
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