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CREATED BY:
Farisa Himatin Nihayati (053184229)
OBJECTIVES
SUBJECT
EVALUATION
CLOSURE
Measurement is an activity to
compare a quanity with
another quantity that is
assigned as unit.
To measure the quantity of
length, we can use a vernier
caliper.
Vernier caliper is an
instrument to measure length
which is more accurate than a
ruler, since it has the smallest
scale of 0,1 mm.
CONSIST OF A VERNIER CALIPER
HOW TO READ THE SCALE OF A VERNIER
CALIPER?
 The reading of the main
scale that coincides with
the zero vernier scale is
between 3 mm and 4 mm.
 The vernier scale that is
joint vertically with the
main scale is the seventh
scale.
Thus, the reading of the
vernier caliper is
(3mm + 0,7mm) = 3,7mm
CONSIST OF A MICROMETER SCREW GAUGE
HOW TO READ THE SCALE OF A MICROMETER SCREW
GAUGE?
 The reading of the main
scale that coincides with
the edge of the outer wrap
is 7,5mm.
 The outer wrap line which
coincides exactly with the
horizontal line of the main
schale is 38-th line.
Thus, the reading of the
micrometer screw gauge is
(7,5mm + 38 part) = 7,5mm +
0,38mm = 7,88mm.
WORKSHEET
Objectives
: Doing measurement of length, outer
diameter, and width by vernier caliper
and micrometer screw gauge
Materials
: - Cubes
- Cylinders
- Vernier caliper
- Micrometer screw gauge
Experiment methods :
• Measure length, and width of cubes by vernier
caliper micrometer screw gauge
• Measure length and outer diameter of cylinder by
vernier caliper and micrometer screw gauge
EVALUATION
What is measurement?
What is an instrument to measure the length?
 Why a micrometer screw gauge more accurate than a
vernier caliper?
What is the reading of the vernier scale shown below!
EVALUATION
A ring is measured by a vernier caliper. What is the
diameter of the ring as read in the scale?
EVALUATION
 The following figure illustrates a micrometer screw
gauge. What is reading shown?
EVALUATION
A student uses a micrometer screw gauge to measure the
diameter of a cylinder. The following figure shows the
reading of the micrometer screw gauge. What is the the
reading shown?
CONCLUSION
 Measurement is an activity to compare a quanity
with another quantity that is assigned as unit. To
measure the quantity of length, we can use a
vernier caliper.
 The vernier consists of a main scale engraved on a
fixed jaw and an vernier scale engraved on a
movable/sliding jaw
 The steps of reading the scale of a vernier caliper
are:
 Read the main scale that coincides with the zero
vernier scale
 Read the vernier scale that is joint vertically with
the main scale.
CONCLUSION
 The micrometer screw gauge consists of
thimble/outer wrap, sliding jaw, sleeve with main
scale.
 The steps of reading the scale of a vernier caliper
are:
 Read the main scale that coincides with the edge
of the outer wrap
 Read the outer wrap line which coincides
exactly with the horizontal line of the main scale.