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 of the specimen. Therefore, In this article, I will be explaining the 10 Measuring Instruments and their Uses in Engineering Workshop in a detailed way.
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Before knowing the instruments,yo u need to know the units of measurement in both C.G.S and M.K.S System and are as follows.
- Length is measured in centimeter (cm)
- Mass is measured in grams (gm)
- Time is measured in second (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:
The 10 Measuring Instruments and their uses are presented below.
- Steel rule & Measuring Tape
- Surface Plate
- Try square
- Inside Calliper
- Outside Calliper
- Odd leg caliper
- Vernier Calliper
- Vernier Height Guage
The detailed explanation of 10 Measuring Instruments and their uses are shown below.
- It is an instrument in geometry which is used to measure the length, breadth, and height of the given specimen
- It is a flexible form of a ruler.
- It is calibrated in terms of mm, cm and inches.
- 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.
This is used for marking circles, arcs, laying out perpendicular lines, bisecting lines etc. on the given specimen.
- It is used for marking and checking the right angles (Flatness & Squareness) of the given workpiece.
- These Try squares come in various sizes from 75mm-300mm.
The inside caliper is used to measure the internal size of an object.
- The outside caliper is used to measure the external size of an object.
- This is also called “Jenny Caliper”.
- This is used for marking parallel lines from a finished edge and also for locating the center.
- 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.
A micrometerr 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 the depth probe of Vernier calipers.
- L.C. of Micrometer is 0.01 mm.
- A height gauge is a measuring device used either for determining the vertical distances or for the 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.
For Diagram and Parts of Vernier Height Guage, Click Here
This is the complete explanation of the 10 Measuring Instruments and their uses in a detailed way.
A Part from the Measuring Instruments used in Workshop, I will discuss a few types of instruments used in Production Labs also.
So, Let’s Start…
- Surface Measuring Instruments
- Linear Measuring Instruments
- Angular Measuring Instruments
- Taper Measuring Instruments
The explanation of the above Measuring Instruments is as follows.
Under Surface Measuring Instruments, we have
- Optical flat
- Surface Gauge
- Surface edge
- Surface plate
Linear measuring instruments are divided into 4 categories and are as follows.
- Non–Precision Instrument
- Precision Instrument
- Measuring Machines
The measuring instruments which come under Non-Precision Instruments are
- Depth Gauge
- Steel rule
- Telescopic Gauge
The measuring instruments which come under Precision Instruments are
- Slip Gauges
- Vernier Calipers
- Height Gauges
The measuring instruments which come under Comparators are
The measuring instruments which come under Measuring Machines are
- Co-Ordinate Measuring Machines (CMM)
- Tool Maker’s Microscope
Angular measuring instruments are used for measuring the angularity of the given components. They are classified as
- Precision Instruments
- Non – Precision Instruments
Non – Precision Instruments
- Combination set
- Adjustable bevel
- Bevel Protractor
- Dividing head
- Spirit level
- Sine bar
- Angle Gauge
Taper measuring instruments are used for the measuring slope type of surfaces on the components.
- Taper micrometer
- Toolroom microscope
- Bevel Protractor
- Sine bar and dial gauge
- Slip gauges, Rollers and micrometer
AutoCAD is one of the basic tools which is used in both the small scale and large scale industries. Autocad is the first software which has the ability to draw 2D Sketches and later it has upgraded to 3D models also. In this article, I will be listing out all the Editing commands, drawing commands, creating layers in Autocad and all the Shortcuts which are essential in using Autocad Software.
Tabular Column: Click on the links to Navigate
|Command Name||Short keys||Menu Bar||Result of command|
|Line||Line/L||Draw>Line||Drawing a line from one point to another.|
|Arc||Arc/A||Draw> Arc,Radius,Center||Drawing arcs based on radius, points, angles.|
|Draw a circle based on a center point & radius, diameter.|
|Spline||Spline||Spline||A spline is used to create the different path of Lines|
|Ellipse||Ellipse||Ellipse||Ellipse of different sizes|
|Polygon||Polygon||Polygon||Any No. of sides can be drawn by using this command|
|Rectangle||Rec||Rectangle||Used to create rectangular bars or boxes.|
|Polyline||Poly||Draw>poly line||An advanced of a line without any breaks.|
|Copy||CO –>Enter||Modify>Copy||Used to copy any entity|
|Hatch||H–>Enter||Draw>Hatch||Used to fulfill the line segments in the selected area.|
|Trim||TR–>Enter||Modify>Trim||Remove unnecessary lines and points in the sketch region.|
|Mirror||MI–>Enter||Modify>Mirror||Creates a mirror image of a selection set or an object.|
|Offset||Select object > O–>Enter||Modify>Offset||Offsets set an object (parallel) by a set distance.|
|Extend||EX–>Enter||Modify>Extend||Extends objects up to a selected boundary edge.|
|Fillet||F–>EnterR–>Enter||Modify>Fillet||Creates a round corner between two lines|
|Chamfer||CHA–>Enter||Modify>Fillet||Creates a sharp corner between two lines.|
|Scale||SC–>Enter||Modify>Scale||Used to change the size of the drawing.|
Drawing Commands in AutoCAD:
|DIMENSION STYLE||D-ENTER||Opens dimension style manager interface.|
|IMAGE||IM – ENTER||Launch image manager.|
|D VIEW||DV – ENTER||Perspective view.|
|LEADER||LE-ENTER||Leader line with annotation(TEXT)|
|MOVE||M-ENTER||Move the selected object from one place to another place.|
|LIST||LI-ENTER||Display information about drawing in a text window.|
|ERASE||E – ENTER||Erase a selected drawing.|
|JP GOUT||JP GOUT-ENTER||Creates a JPEG file of current drawings.|
|DONUT||DO-ENTER||Draw a solid donut shape.|
|DIVIDE||DIV-ENTER||Inserts point node a set division.|
|MATCH PROPERTIES||MA-ENTER||Match properties of an object.|
|DIST||DI -ENTER||Check a distance between selected points.|
|AD CENTER||DC-ENTER||Opens design center interface.|
|ROTATE||RO – ENTER||Rotate a selection of objects.|
|PAN||P-ENTER||To adjust drawing positions.|
|LAYOUT||LO-ENTER||Creates a new layout Interface.|
|UNITS||UN – ENTER||Display drawing unit interface.|
|W BLOCK||W – ENTER||Write a block.|
|CUSTOMIZE||CUI – ENTER||Opens customize user interface dialogue.|
|TABLE||TB – ENTER||Opens insert a table dialogue box.|
|OPTIONS||OP-ENTER||Open options dialogue box.|
|TEXT||T – ENTER||Write text.|
|TOOL PALETTES||TP – ENTER||Display tool palette interface box.|
|PURGE||PU-ENTER||Opens purge interface box to remove unused elements.|
|LAYER||LA-ENTER||Opens the layer interface.|
|PROPERTIES||PR-ENTER||Opens properties dialogue box.|
|UNDO||U – ENTER||Select the last command.|
|COLOR||COL – ENTER||Opens select color dialogue box.|
|BLOCK||B-ENTER||Opens block dialogue box.|
|SPELL||SP – ENTER||Spell check a selection – drawing check entire drawing.|
|VIEW||V – ENTER||Opens view Manager dialogue box.|
|EXPLODE||X – ENTER||Explode single segment to component parts.|
|PLOT||CTRL-P||Opens plot/print interface box.|
|RENAME||REN – ENTER||Opens rename interface box to rename blocks, layers, etc|
Edit commands are used to Edit the given sketch in Autocad software.
|S.No.||Name of the Command|
|12||Break at point|
|TEXT SCR||F2||Open previous using command list|
|HELP||F1||Opens Autocad help|
|COORDS||F6 (or) CTRL+D||Coordinate display on/off|
|SNAP||F9 (or) CTRL+B||snap on/off|
|DYN MODE||F12||Dynamic input ON/OFF|
|ORTHO||F8 (or) CTRL+L||Ortho ON/OFF|
|GRID||F7 (or) CTRL+G||Grid ON/OFF|
|POLAR||F10 (or) CTRL+U||Polar ON/OFF|
|OSNAP TRACK||F11 (or)
|Object snap tracking ON/OFF|
|F5 (or) CTRL+E||Iso planes activate|
- AutoCAD in Manufacturing Field
- AutoCAD as an architectural planning tool
- AutoCAD as an engineering drafting tool
- AutoCAD in 3D Printing
- AutoCAD as a graphic design tool
- AutoCAD in the fashion industry
- AutoCAD as an industrial design tool
- AutoCAD in Mechanical Engineering
- Revisions and modifications
- 3D View
- Storage and accessibility
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