Measuring magnifier with special reticle
US3942896A · kind A · utility
5Cited by
1References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | Nov 6, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K5/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A measuring device to determine whether the width of a printed bar falls within prescribed tolerances has a sleeve with a magnifying lens at one end and a reticle at the other end. The reticle is inscribed with indicia for providing an immediate visual indication of the magnitude of width of the bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.