Multifunctional measuring instrument

The utility model relates to a multi-use measuring device, which is comprised of a circular protractor, two wide rulers and a narrow ruler stacking together; wherein, the circular protractor is arranged on the bottom, the narrow ruler is arranged on the circular bottom, the two wide rulers are arran...

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Bibliographic Details
Main Author JIAHUI DU
Format Patent
LanguageEnglish
Published 14.03.2007
Subjects
ACCESSORIES FOR WRITING OR DRAWING
ARTICLES FOR WRITING OR DRAWING UPON
BUREAU ACCESSORIES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PERFORMING OPERATIONS
PHYSICS
TESTING
TRANSPORTING
WRITING OR DRAWING IMPLEMENTS
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Summary:The utility model relates to a multi-use measuring device, which is comprised of a circular protractor, two wide rulers and a narrow ruler stacking together; wherein, the circular protractor is arranged on the bottom, the narrow ruler is arranged on the circular bottom, the two wide rulers are arranged on the narrow ruler and forms into a spider joint. A fixing nail passes through the center of the two wide rulers. The center of the narrow ruler and the center of the circular protractor in turn and connect them together. The center of the narrow ruler is provided with a circular hole and the diameter of the circular hole is larger than the diameter of the fixing nail, so that the narrow ruler is capable of twirling. To compare with the prior art, the utility model is a combination of ruler, set square and protractor and is capable of measuring angle, length and expressing the four quadrants of the function. The utility model is convenient for reservation and portable, which contributes to the students and the teachers to finish their tasks more swiftly.
Bibliography:Application Number: CN2006290327U