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...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English |
Published |
14.03.2007
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
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 |