TW200743780A - Measurement ruler with proportional and comparison functions - Google Patents

Measurement ruler with proportional and comparison functions

Info

Publication number
TW200743780A
TW200743780A TW096115822A TW96115822A TW200743780A TW 200743780 A TW200743780 A TW 200743780A TW 096115822 A TW096115822 A TW 096115822A TW 96115822 A TW96115822 A TW 96115822A TW 200743780 A TW200743780 A TW 200743780A
Authority
TW
Taiwan
Prior art keywords
proportional
measurement ruler
comparison functions
scale mark
carrier
Prior art date
Application number
TW096115822A
Other languages
Chinese (zh)
Other versions
TWI416067B (en
Inventor
yu-long Li
Original Assignee
yu-long Li
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by yu-long Li filed Critical yu-long Li
Priority to TW096115822A priority Critical patent/TW200743780A/en
Publication of TW200743780A publication Critical patent/TW200743780A/en
Application granted granted Critical
Publication of TWI416067B publication Critical patent/TWI416067B/zh

Links

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  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

A measurement ruler with proportional and comparison functions includes a carrier and at least a scale mark. The carrier includes a first surface. The scale mark is used to compare with one of three sides of a right triangle in order to display the length of one of the other two sides of the right triangle. Furthermore, the scale mark is formed on a first surface of the carrier, in which the magnitude of unit scale of the scale mark is obtained by trigonometry using an acute angle of the right triangle.
TW096115822A 2006-05-19 2007-05-04 Measurement ruler with proportional and comparison functions TW200743780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW096115822A TW200743780A (en) 2006-05-19 2007-05-04 Measurement ruler with proportional and comparison functions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW95117752 2006-05-19
TW096115822A TW200743780A (en) 2006-05-19 2007-05-04 Measurement ruler with proportional and comparison functions

Publications (2)

Publication Number Publication Date
TW200743780A true TW200743780A (en) 2007-12-01
TWI416067B TWI416067B (en) 2013-11-21

Family

ID=49990911

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096115822A TW200743780A (en) 2006-05-19 2007-05-04 Measurement ruler with proportional and comparison functions

Country Status (1)

Country Link
TW (1) TW200743780A (en)

Family Cites Families (2)

* Cited by examiner, โ€  Cited by third party
Publication number Priority date Publication date Assignee Title
CN2441615Y (en) * 2000-08-04 2001-08-08 ไป˜็Ž‰ๆ‰ Angle and slope corresponding rule
MXPA03011696A (en) * 2001-06-12 2004-12-06 Master Innovations Llc Measuring and instructional ruler.

Also Published As

Publication number Publication date
TWI416067B (en) 2013-11-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees