The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1987
Filed:
Jun. 02, 1986
Applicant:
Inventor:
Chyi-Yiing Wu, Taipei, TW;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
33399 ;
Abstract
A precise-reading angular level includes a casing, a rotational protractor rotatably mounted in the casing, a plumbing swing wheel pivotedly mounted in the protractor, and a vernier formed on the central top position of the casing above the protractor, wherein the protractor is made to have an outer angle scale matching with the vernier scale and an inner angle scale operatively coinciding with a pointer printed on the swing wheel to prevent strabismal reading error, and an aligning pointer is formed on the protractor to projectively superimpose the pointer on the wheel for convenient reading of the measured angle even after removing the level from the measuring position.