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Ù²YoNp ùTYp @lWdhP¬u ¡WôËúY`uv (Graduations of universal bevel
protractor)
úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
• ¥vd (disc) úUp Es[ ùU«u vúLp ¡WôËúY`uLû[l Tt±d (main scale graduations)
A±Rp
• PVp (dial) úUp Es[ ùYo²Vo vúLp ¡WôËúY`uLû[l Tt±d (vernier scale
graduations) A±Rp
• ùYo²Vo ùTYp ×WPdP¬u (vernier bevel protractor) ÄvhþùLüih (least count
Áf£t\[ûYj) ¾oUô²jRp.
ùU«u vúLp ¡WôËúY`uv (TPeLs ϱdÏm ¥vd¡u úUp Es[ ©¬ÜLs
1 Utßm 2) (The main scale graduations) ùU«u vúLp ¥®`uv Gu\±VlTÓ¡\Õ.
PVXõp ùU«u vúLp 23 ©¬ÜLÞdLô]
úLôQeLû[ A[lTRtÏ HÕYôL AkR
CPm (23 divisions spacing) 12 NUTôLeL[ôL
úSôdLj§p ¥vd¡u (discþu) ØÝf
ùYo²V¬p ©¬dLlTh¥ÚdÏm. JqùYôÚ
Ñt\[®Ûm ¥¡¬Ls ©¬Ü TiQl
Th¥ÚdÏm. (the full ciircumference of the 360°- êu\ôYÕ úLôÓm (Each 3rd line) ¿[UôL
Ùm NUUôL YÏdLlThÓ TiQlThÓ ‘4’ YûWVlThÓ Gi¦PlTh¥ÚdÏm 0, 15,
30, 45, 60 GuTÕ úTôuß Gi¦Pl
LôtTϧL[ôL ϱÂÓ TiQlTh¥ÚdÏm
Th¥ÚdÏm. CÕ ùYo²Vo vúLûX
‘0’ ¥¡¬«p CÚkÕ 90°, 90°-«XõÚkÕ 0° YûW,
Y¥YûUd¡\Õ. CûRlúTôu\ ©¬ÜLs ‘0’
0° CÚkÕ 90° Utßm 90° CÚkÕ 0° ¥¡¬ G]
®u CPÕ ×\j§Ûm ϱÂÓ TiQl
ϱÂÓ TiQlTh¥ÚdÏm. JqùYôÚ 10YÕ
Th¥ÚdÏm. (Fig 1)
©¬Üm ¿[UôL TiQlThÓ Gi¦Pl
Th¥ÚdÏm JqùYôÚ ©¬Üm 1° (1 degree)
£_õ & Gm: @©hPo (NSQF - Revised 2022) R.T. for Ex.1.2.36 111
