The document focuses on measuring instruments used in physics, including vernier calipers and screw gauges, detailing their functionalities such as measuring lengths, diameters, and depths with precision of up to 0.01 mm. It also describes other instruments like physical balances for measuring mass and stopwatches for timing events. Additionally, it includes homework instructions, recommending videos for better understanding of measurement processes.

1. Chapter02
Measurements
(Measuring Instruments)
Lec-08

2. Learning Objectives
• Review
• Concept of Prefix in Physics
• Measuring Instruments
• Vernier Caliper
• Screw Gauge
• Review Questions

3. Prefix Used
with SI Units
1000
0.01
0.001
0.000001

4. Measuring
Instruments

5. 1. Vernier Caliper
Metter stick measures the length in
mm at minimum level if we need to
find even smaller values of length
we use Vernier caliper. It can
measure length up to 0.01 mm (10
Micrometers)

7. 1. Length of
any object
using the jaws
of Vernier
caliper

8. 2. Outer
diameter of any
circular object
can be
determined
using Vernier
Caliper

9. 3. Inner
Diameter can
be calculated
using upper
jaws of
Vernier
Caliper

10. 4. Depth of
any hollow
object can be
calculated
using Strip

12. Zero Error/ Instruments
Error
This error can be
removed by adding
or subtracting the
error value

13. 2. Micrometer Screw Gauge
This instrument is also used for measuring small
lengths
up to
0.01mm

15. Physical Balance
It is an instrument
used for measuring
the mass of any
object by comparing
it with a known mass

16. Stop Watch
It is an instrument
used for calculating
the time of any
incident or action.
Stopwatches can be
digital or analog.

17. Measuring
Cylinders
It is an instrument used
for calculating the
volume of liquids.

18. Home Task
Watch the provided videos and write the
process of taking measurements from
Vernier caliper and screw guage

19. Thank You For Your
Cooperation
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08 ”