The document discusses measuring instruments used in automotive industry. It aims to classify measuring instruments as either precision measuring instruments or electric/electronic measuring instruments. It provides examples of various types of measuring instruments like micrometer, Vernier caliper, dial indicator, compression tester, voltmeter, timing light, and tachometer. It includes activities for students to match instruments with their uses, classify them, identify suitable instruments for different scenarios, and discuss experiences using measuring instruments.

2. Are you ready?

3. VIOLET

4. YELLOW

10. Do you want another game?

11. 4-PIC-ONE-WORD

12. 4-PIC-ONE-WORD

14. At the end of the lesson, the student should be
able to:
1.1 Classify measuring instruments into precision
measuring instrument and electronic measuring
instrument.
1.2 Explain the uses of different measuring
instruments.
1.3 Appreciate the importance of measuring
instrument in Automotive industry.

15. COMPARISON OF 2 MEASURING INSTRUMENT

19. COMPARISON OF 2 MEASURING INSTRUMENT

20. COMPARISON OF 2 MEASURING INSTRUMENT

21. COMPARISON OF 2 MEASURING INSTRUMENT

22. COMPARISON OF 2 MEASURING INSTRUMENT

23. COMPARISON OF 2 MEASURING INSTRUMENT

25. GROUP ACTIVITY
ACTIVITY # 1 : Matching Type
Direction: Match the pictures in
column A to its corresponding
description on column B.Refer to
activity sheet
ACTIVITY # 2: Classify
Direction: Classify the measuring
instruments in Activity # 1 into
precision measuring instrument
and electronic measuring
instrument. Fill out the table
below. Put a heart emoji if the
measuring instrument belongs to
Precision Measuring Instrument
and a happy emoji if it belongs to
Electric/ Electronic Measuring
Instrument.

26. Measuring Instruments
Precision Measuring Instrument Electric/ Electronic Measuring
Instrument.
1.
2.
3.
4.
5.
6
7.
8.
9.
10.
Guide Questions:
How does precision measuring instrument differ from electric/ electronic measuring instrument?

27. 2 TYPES OF MEASURING INSTRUMENT
1. PRECISION-MEASURING INSTRUMENT
2. ELECTRIC/ELECTRONIC MEASURING
INSTRUMENT

28. PRECISION MEASURING INSTRUMENT
• are tools or devices used for directly measuring physical quantities, or
obtaining measurements indirectly by making calculations on real-
world objects in such a manner that one can get precise values.

29. 1. STEEL RULE
-The simplest tool
used for measuring
linear distances.

30. 2. THICKNESS GAUGE/FEELER GAUGE
-are strips and blades of
metal of various
thicknesses.
-They are used to measure
small gaps or distances
such
as the clearance between
two parts.

31. 3. WIRE GAUGE
-are precisely-sized pieces
of round wire.
- the diameter is usually
marked on the handle or
holder.
- it measured the
sparkplug gaps and other
openings.

32. 4. MICROMETER
• - a hand-held precision
measuring instrument.
• - in English metric system, it
measures thicknesses in
• thousandths or ten-
thousandths of an inch,
while in Metric
• measurements are in
hundreds or millimeter.

33. 5. VERNIER CALIPER
-can take both inside and
outside measurements.
These may be
in either thousandths of
an inch or hundredths of a
millimeter.

34. 6. DIAL INDICATOR
• -It has a dial face and a needle to
register measurements. The
needle moves in relation to
movement of a movable arm or
plunger. As the plunger moves,
the needle shows the distance
or variation. The reading may be
in thousandths of an inch or
hundredths of a millimeter.

35. 7. PLASTIGAGE
- a plastic material available in
strips of various diameters.
-use to measure the clearance in
crankshaft main bearings and
connecting rod bearings, and in
some camshaft bearings.

36. ELECTRIC/ELECTRONIC MEASURING INSTRUMENT
-is used for measuring electrical quantities likes current, voltage, power,
etc.

37. 1. COMPRESSION TESTER
• this is used to test the
compression pressure of the
individual cylinders by inserting
the compression tester in place
of the spark plug.

38. 2. VACUUM GAUGE
-this is used to track down
troubles in an engine that
does not run as well as it
should.
-it measures intake
manifold vacuum.

39. 3. VOLTMETER
• this is a device for
measuring the potential
difference of voltages
between two points such
as the terminals of
battery alternator or two
points in an electric
circuit.

40. 4. OHMMETER
-this is an
instrument used to
measure the
electrical
resistance.

41. 5. HYDROMETER
-a device used to
measure the specific
gravity of battery
electrolyte to
determine the state of
charge.

42. 6. TIMING LIGHT
-this is used in setting a
perfect timing for the
spark plug to give of
electric spark during
combustion in the
ignition system.

43. 7. Engine Analyzer
-a testing equipment used to find
out common engine troubles, be
they mechanical or electrical.

44. 8. OSCILLOSCOPE
•used for
diagnosing ignition
and other
electrical
problems.

45. 9. DYNAMOMETER
•used by big
service shops
in checking
engine power.

46. 10. TACHOMETER
• this is a device for measuring
engine speed or revolutions per
minute (rpm)

47. Activity # 3:
Direction: Read and understand each
situation very carefully. Identify the correct
measuring instrument needed in the
following scenario and classify the measuring
instrument into precision measuring
instrument and electric/electronic measuring
instrument.

48. 1.Billy detects that his car battery has
problems. To test his car battery, what
measuring instrument should he use?
2. Alfie is having a hard time starting his
motorcycle. Upon checking, he finds out that
the sparkplug gap needs adjustment. What
measuring instrument should he use to make
the adjustment? Why?

49. 3.Mark always encounter engine trouble in
his old car. What measuring instrument
should he use? Why?
4.Marlon needs to check the clearance
between the engine piston and cylinder. What
measuring instrument should he use? Why?
5.Chris wants to check his car’s engine speed.
What measuring instrument should he use?
Why?

50. Activity # 4:
Direction: Look for a partner, share your personal
experiences on the different scenarios you’ve
encountered in your home, neighborhood or in a
vulcanizing shop wherein measuring instruments
are being used.

51. 1.What measuring is instrument was being used?
2.Does the person expert in using the measuring
instrument? Why?
3.What are the measuring instrument you use in
your home which is very heplful to you? What’s its
uses?
4. What are the measuring instrument you use in
your Technical Drawing class which is very heplful
to you? What’s its uses?

52. Direction: Match the measuring instruments in column A with its corresponding uses in column
Measuring Instruments
Precision
Measuring
Instrument
Electric/
Electronic
Measuring
Instrument.
1.
2.
3.
4.
5.
6
7.
8.
9.
10.