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Byju's Answer
Standard VIII
Mathematics
Screw Gauge
What is the m...
Question
What is the meaning of zero of circular scale division coincides with 25 divisions above reference level in screw gauge ?what is difference if it was written below in place of above?
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Q.
A student measured the diameter of a small steel ball using a screw gauge of least count
0.001
c
m
.
The main scale reading is
5
m
m
and zero of circular scale division coincides with
25
divisions above the reference level. If screw gauge has a zero error of -
0.004
c
m
,
the correct diameter of the ball is
Q.
A student measured the diameter of a small steel ball using a screw gauge of least count
0
.
001
c
m
. The main scale reading is
5
m
m
and zero of circular scale division coincides with
25
divisions above the reference level. If screw gauge has a zero error of
–
0
.
004
c
m
, the correct diameter of the ball is