Engineering:Diagonal scale
Diagonal scale is an engineering measuring instrument which is composed of a set of parallel straight lines which are obliquely crossed by another set of straight lines. Diagonal scales are used to measure small fractions of the unit of measurement.[1]
Etymology
Diagonal scale is derived from the Latin word Diagonalis. The Latin word was originally coined from the Greek word diagōnios where dia means "through" and gonios denotes "corners".[1][2]
Principle of Diagonal scale
Diagonal scale follows the principle of similar triangles where a short length is divided into number of parts in which sides are proportional.[3] Divided into required number of equal parts
Application
Diagonal scale is used in engineering to read lengths with higher accuarcy as it represents a unit into three different multiple in metres, centimeters and millimeters.[4] Diagonal scale is an important part in Engineering drawings.[5]
References
- ↑ 1.0 1.1 (in en) Webster's Revised Unabridged Dictionary of the English Language: The Dictionary Proper Being the Authentic Ed. ... of 1890, to which is Now Added a Department of New Words Together with Many Valuable Special Features. Merriam-Webster. 1913. https://books.google.co.in/books?id=UullMQAACAAJ&dq=Webster%27s+Revised+Unabridged+Dictionary&hl=en&sa=X&ved=0ahUKEwiY78qAyK3PAhXMLo8KHSELCPcQ6AEIHjAA.
- ↑ Davidson, Thomas (1907) (in en). Chambers's Twentieth Century Dictionary of the English Language. W. & R. Chambers Limited. https://books.google.co.in/books?id=cIIVAAAAYAAJ&dq=Chambers%27s+Twentieth+Century+Dictionary&hl=en&sa=X&ved=0ahUKEwjFiK3kyK3PAhWLrY8KHYXkBfYQ6AEIJDAB.
- ↑ "Types of Scales in Engineering Surveying | Civil Engineering Projects". 28 October 2011. http://www.civilprojectsonline.com/surveying-and-levelling/types-of-scales-in-engineering-surveying/. Retrieved 26 September 2016.
- ↑ Khan, Md Zulfequar Ahmad (in en). Text Book Of Practical Geography. Concept Publishing Company. p. 26. ISBN 9788170226826. https://books.google.co.in/books?id=mZKhRkZ7qawC&pg=PA23&dq=diagonal+scale&hl=en&sa=X&ved=0ahUKEwiUw8SLzq3PAhXJuY8KHYYsCPIQ6AEILTAB#v=onepage&q=diagonal%20scale&f=false.
- ↑ Punmia, B. C. (in en). Surveying. Firewall Media. p. 11. ISBN 9788170088530. https://books.google.co.in/books?id=EM-sLyVmMwIC&pg=PA11&dq=diagonal+scale&hl=en&sa=X&ved=0ahUKEwiZ7fDNz63PAhWMLY8KHXJ_BPcQ6AEIMzAC#v=onepage&q=diagonal%20scale&f=false. Retrieved 26 September 2016.
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