T-square apparatus
US4635377A · kind A · utility
5Cited by
11References
9Claims
0Family size
Inventor
Key dates
| Filing date | Apr 5, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Apr 5, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An adjustable T-square apparatus comprising a generally triangular frame having first and second working surfaces normal to each other and a third working surface at a 45.degree. angle to the first and second working surfaces is disclosed. The apparatus further comprises three level vials mounted on the frame in parallel relation to separate working surfaces. A pair of measuring blades are slidably mounted on the frame in parallel relation to the first and second working surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.