US Patent: 2,743,699
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| Displacement Indicator
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Patentee:
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| John C. Hollis (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 28, 1954 |
| Granted: |
May 01, 1956 |
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Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
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Description: |
| Claim:
This invention relates to indicators for measuring and showing the displacements, either linear or angular, of movable elements and finds, for example, one advantageous use as a micrometer indicator of the position of a translatable tool holder or work support in machine tools. More particularly, the invention relates to dial indicators having a concentric scale and vernier dial rotated in timed relation so that coarse and fine displacements may be observed. |
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