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GRAPHIC TOOLS

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in this easy and you lecture we will learn what is
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engineering drawing drawing instruments
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and uses and lines and types of lines
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first we'll see what is engineering drawing engineering drawing is a type of
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technical drawing which is used to clearly define the requirements
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for engineered items such as views dimensions
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and necessary information more than drawing pictures
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it is also a language a graphic language that communicates
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ideas and information from one mind to another
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most important it communicates on needed information
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from the engineer who designed the park to the worker
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will make it application engineering drawing
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is used in ships manufacturing aerodynamics of
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automobiles constructions except rap
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legacy different drawing instruments used in engineering drawing
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in this we have a drawing board drawing paper
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pins clips or this if tapes
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pencils T-square set square
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scale drafter rule a scale protractor
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french girls compass and eraser
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page it's time to concentrate now
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now let's describe each and every instrument drawing board is rectangular
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in shape
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and is made of wood about 25 mm take it is created at the back
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by to batons to prevent warping the surface of the board should be smoothed
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and is used to keep the drawing paper there's a working inch at the side of
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the drawing board
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one selecting a drawing paper we have to be sure that the size of the paper is
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smaller than the drawing board
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to hold destroying pay-per-view spins or clips
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or this if tapes pencils are basically used to draw
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the accuracy in appearance of a drawing depends on the quality of the pencils
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used
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the creative pencils each 2h
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and HB a mostly used next is a t-square
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it is made of two parts the stock and the bleed
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which are joined together at right angles by means the screws and pins
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the square is fitted at the side of the drawing board
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and it slides along the edge of the board and is used to draw a horizontal
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straight lines
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set square is triangular in shape with one of the angles as right angle
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two forms on the set square are generally used
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one having Angus forty-five 45 and 90 degree
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and the other is 30 60 90 set square is a combination with T-square
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is used to draw lines at an angle a scale is used all lines a specific
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length
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for tractor is flat and semi circular in shape
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its circumferential edge is graduated to one degree divisions
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and his number and every 10 degree interval and is readable from both the
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ends
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the protractor is used to draw on measure angles the combination for
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T-square
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a set square scales and a protractor is a drafter
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it's one in is clamped by means of a screw
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at the and shove the drawing board the other end is adjustable
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it has a skill which is at ninety degree and also has a protractor which can be
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rotated
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at certain angles this kid can be moved anywhere you want within its limits
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next is a rule the scale it has a ruler in it
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it is used for drying vertical lines horizontal lines
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parallel lines angles and circles
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next instrument is a French to your maiden very shapes
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one of which is shown here French curve is used for drying curves which cannot
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be drawn with
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a compass it is used to draw curves like lips
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parable a hyperbola exit row a compass
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is used to draw a circle of a specific radius and an ACH
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at a specific distance soft Indian robert is widely used to respond so
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drawings
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there is a should be such that it does not spoil the surface of the paper
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next to see lines and types of lines just
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as in any textbook we are thought to use the correct but so making correct
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sentences
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similarly engineering drawing the details a very subject to drawn by
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different types of lines
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various types of lines I used in engineering drawing
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now let us see the different types of lines first is a continuous
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decline this line is used to display outline
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and edges of the main drawing next is the continent's thinline
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this line is basically use for dimension extension
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projection leaders hatching Exeter
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next is a cunt news them free hand line
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this line is used to show short break or irregular boundaries
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next is the country is still in line with 6x
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this line is used to show a long break next is the dashed line
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this line is used to show hidden inches of the mean
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object next is a chain pionline
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long dashed dotted this line is used to represent the center line for such as an
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ox
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next is the chain ten online with take
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at the ends this line is used to represent the location of the cutting
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plane
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let us take a quick review of what we've learned in this video lecture
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first we have seen that engineering drawing is a type of a technical drawing
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which is used to clearly define the requirements for engineered items such
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as
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use dimensions and necessary information
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is also called as graphical language and heads to communicate
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next we have seen different drawing instruments used engineering drawing
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such as
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drawing board
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drawing paper pains clips
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or this if tapes pencils T-square
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set square scale
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drafter roll a scale protractor
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French CAS compass
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and Raza and their uses finally we have seen different types of lines used in
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engineering drawing to draw an object
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so this is the overview of our video lecture

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