Page 126 - Content.pmd

25 ©¬ÜLÞûPV ùYo²Vo vúLûX TPm 2-p ùYo²Vo A[ÜúLôXõu ËúWô
ùLôiÓs[ ùYo²Vo LôXõlTo (Vernier úLôPô]Õ ©WRô] A[ÜúLôXõp JÚ
Caliper with 25 divisions in vernier scale) (Fig 1) AeÏXj§tÏ ©u CÚd¡u\Õ.

G]úY, ©WRô] A[ÜúLôXõu ØÝ AeÏX
U§l× = 1.000 AeÏXm
©WRô] A[ÜúLôXõp

ØÝ AeÏX U§l× = 1.000 AeÏXm
2 ùT¬V ©¬ÜL°u
U§l× = 0.200 AeÏXm
©WRô] A[ÜúLôXõp JÚ AeÏX
A[Yô]Õ 10 ùT¬V ©¬ÜL[ôL ©¬dLl JÚ ÕûQ ©¬®u
ThÓ, AûY JqùYôußm, úUÛm U§l× = 0.025 AeÏXm
4 ©¬ÜL[ôL ©¬dLlThÓs[]. JqùYôÚ ùYo²Vo A[ÜúLôXõp
ÕûQ ©¬®u U§l× 0.025 AeÏXm BÏm.
úSo Ju±V (coinciding)
©WRô] A[ÜúLôXõp AÕ úTôuß Es[ 13þYÕ ©¬®u U§l× = 0.013 AeÏXm
49 ÕûQ ©¬ÜL°u U§l×, ùYo²Vo
A[ÜúLôXõp 25 ©¬ÜLÞdÏf NUUôÏm. A[Ü= 1.238 AeÏXm

Áf£t\[Ü (Least count) 50 ©¬ÜLû[ EûPV ùYo²Vo vúLûX

25 ùYo²Vo A[ÜúLôXõu ©¬ÜLs ùLôiP ùYo²Vo LôXõlTo B]Õ
Fig 3-p Lôi©dLlThÓs[Õ. C§p ©WRô]
= 49 x 0.025 AeÏXm = 1.225” AeÏXm A[ÜúLôXõu JÚ AeÏX A[Yô]Õ 10
ùYo²Vo A[ÜúLôXõu, JÚ ©¬®u U§l× ùT¬V ©¬ÜL[ôL ©¬dLl ThÓs[Õ.
JqùYôÚ ÕûQ©¬®u U§l×m 0.05" BÏm.
= 1.225 / 25 = 0.049” AeÏXm
ùYo²Vo A[ÜúLôXõp Es[
ùYo²V¬u = ©¬ÜLs = 0.025 x 2 = 0.05” 50 ©¬ÜLs ©WRô] A[ÜúLôXõp Es[
Áf£t\[Ü = ©WRô] A[ÜúLôXõu JÚ 49 ©¬ÜLÞdÏf NUm.
©¬Ü – ùYo²Vo A[ÜúLôXõu JÚ ©¬®u
U§l×
©WRô] A[ÜúLôXõu AÚLôûU«p

Es[ A[Ü (MSD) = 0.05" (2MSD)
G]úY Áf£t\[Ü = 0.05" – 0.049"

Áf£t\[Ü = 0.001" ApXÕ 1/1000"
A[Ü GÓlTRtLô] ERôWQm (Example
of reading) (Fig 2) Áf£t\[Ü (Least count)
ùYo²Vo
A[ÜúLôXõp
50 ©¬ÜL°u U§l× = 49 × 0.050
= 2.45"

JÚ ùYo²Vo
A[ÜúLôp
©¬®u U§l× = 2.45" / 50

= 0.049"
Áf£t\[Ü = ©WRô] A[Ü
úLôXõu JÚ
©¬®u U§l× –

£_õ & Gm: @©hPo (NSQF - Revised 2022) R.T. for Ex.1.2.35 105