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US Patent: 1,425,201
Micrometer Gauge or Caliper
Patentee: Andrew Hetherington (exact or similar names) - West Hoboken, NJ USPTO Classifications: 33/826 Tool Categories: layout tools : measurement gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 21, 1919 Granted: Aug. 08, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This micrometer features a measuring head that can be set into frames of varying sizes.

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