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US Patent: 1,424,492
Caliper Caliper Rule
Patentee: Henry Leschen (exact or similar names) - Webster Groves, MO USPTO Classifications: 33/810 Tool Categories: rules : folding rules Assignees: A. Leschen & Sons Rope Co. - St. Louis, MO Manufacturer: A. Leschen & Sons Rope Co. - St. Louis, MO Witnesses: Unknown	Patent Dates: Applied: Feb. 03, 1921 Granted: Aug. 01, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a standard caliper rule, with wide jaws to allow it to accurately measure circular objects.

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