Engineering Workshop MECHANICAL THEORY

10 Measuring Instruments and their Uses in Engineering Workshop

Measuring Instruments plays a vital role in the Engineering Workshop.The Instruments duty is to measure the given specimen according to the given dimensions.Without these instruments it is not possible to measure the dimensions on the specimen.Therefore,In this article,I will be explaining about the 10 Measuring Instruments and their Uses in Engineering Workshop in a detailed way.

Read:3 Types of Marking Out Tools used in Fitting – Engineering Workshop

Before knowing the instruments,you need to know the units of measurement in both C.G.S and M.K.S System and are as follows.

1.Metric system(C.G.S)

  • Length is measured in centimeter (cm)
  • Mass is measured in grams (gm)
  • Time is measured in second (s)

2.S.I system(M.K.S)

  • Length is measured in meter (m)
  • Mass is measured in Kilograms (kg)
  • Time is measured in second (s)
10 Measuring Instruments and their Uses in Engineering Workshop
10 Measuring Instruments and their Uses in Engineering Workshop

10 Measuring Instruments and their Uses in Engineering Workshop:

The 10 Measuring Instruments and their uses are presented below.

  1. Steel rule & Measuring Tape
  2. Surface Plate
  3. Divider
  4. Try square
  5. Inside Calliper
  6. Outside Calliper
  7. Odd leg calliper
  8. Vernier Calliper
  9. Micrometer
  10. Vernier Height Guage 

The detailed explanation of 10 Measuring Instruments and their uses are shown below.

1.Steel rule & Measuring Tape

Steel Rule:

  • It is an instrument in geometry which is used to measure the length , breadth and height of the given specimen

Measuring Tape:

  • It is a flexible form of ruler.
  • It is calibrated in terms of mm,cm and inches.

2.Surface  Plate

  • The Surface plate is used for testing the flatness of a w/p.
  • It is more precise than the marking table.
  • The surface plate is made up of C.I. or hardened steel or Granite stone.

Read:The Surface Plate used in Fitting-Engineering Workshop

3.Divider:

This is used for marking circles,arcs,laying out perpendicular lines, bisecting lines etc. on the given specimen.

Read:Divider-Measuring Tools used in Engineering Workshop

4.Trysquare:

  • It is used for marking and checking right angles(Flatness & Squareness) of the given workpiece.
  • These Try squares comes in various sizes from 75mm-300mm.

5.Inside caliper:

The inside caliper is used to measure the internal size of an object.

Read:Inside Caliper-Measuring Tools used in Engineering Workshop

6.Outside Calliper:

  • The outside caliper is used to measure the external size of an object.

Read: Outside Caliper-Measuring Tools used in Engineering Workshop

7.Odd Leg Caliper:

  • This is also called as “Jenny Caliper” or “Hermaprodite”.
  • This is used for marking parallel lines from a finished edge and also for locating the center.

8.Vernier Calipers

  • Vernier Callipers is used to measure the dimensions of the given specimen like diameter(Outer Dia and Inner dia),length and depth etc.For detailed information,click on the below link.
  • L.C. of Vernier Callipers is 0.02 mm.

Read:Vernier Callipers- Formula, Construction, Expt.-Every Engineer Must know

9.Micrometer

Micrometer is used to measure the diameter of the given specimen only.It is not used to measure the depth of an object which can be done by measuring depth probe of Vernier callipers.

  • L.C. of Micrometer is 0.01 mm.

10.Vernier Height Guage

  • A height gauge is a measuring device used either for determining the vertical distances, or for repetitious marking of items to be worked on.
  • The capacity of the height gauge is specified by the maximum height it can measure.
  • It varies from 150 mm to 1000 mm.

This is the complete explanation of the 10 Measuring Instruments and their uses in a detailed way.

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