MEASURING BY MEANS OF MEASURE MECHANIC OF PRECISION Basic Competence : Explaining the way of usage mechanic measuring instrument of precision 1
BEVEL PROTRACTOR After studying this Items, sudents can be expected to Explain the way of usage of Bevel Protractor Basic competence Explaining the way of usage of mechanic measuring instrument of precision
BEVEL PROTACTOR Universal goniometer which used for angle measurement precisely correctness of measurement till 5 minute Goniometer earn distel at any place with measurement area from zero up to 360
BEVEL PROTACTOR its Read principle frankly do not far differ from principle read of meter shove, only main scale set in degree, while scale of nonius in minute
BEVEL PROTACTOR Example : Division of angle;corner nonius from 0° until 60° consisting of a bow equal to 23° and divided to become 12 part of [is] same. Become 12 shares = 23°, so that 1 shares = 23° / 12 = 1 55’ or 5’ smaller than 2 Example : Scale of Nonius which [is] line = [at] number 25 = 3 daro strip zero ( 0 ) = 3 x 5 = 15’ its Angle;Corner size measure = 54,15
RESUME Bevel Protactor represent used universal goniometer for angle measurement exactly. Bevel Protactor represent used universal goniometer for angle measurement exactly.
REFERENCE Sudji Munadi. 1988. Dasar-Dasar Metrologi Industri. Jakarta: Depdikbud: Dirjen Dikti, Proyek Pengembangan LPTK. Tim Fakultas Teknik Universitas Negeri Yogyakarta. 2004. Penggunaan dan Pemeliharaan Alat Ukur. Yogyakarta: Direktorat Pendidikan Menengah Kejuruan, Depdiknas.
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