 Myself is C.L. Rathod, Assistant Professor, Department of Mechanical Engineering, Walsh and the Institute of Technology, SolarPool. Today's topic is Orthographic Projections of Simple Objects, Learning Outcomes. At the end of this session, students will be able to draw the orthographic projections of Simple Objects. This is the Simple Object. So this is the front view and this is the top view and this is the side view. So when we see from the top. So this portion is going to visible to us and when we see from the top, this slot is going to visible for us and this slot. So first what I have to do? So I have to write down the length is equal to 125 and width is given that is 50 mm and the height is given that is 40 plus 20 is the dimension is given. So for that I have to take 50 is the 50 mm is the height. Now what I have to do? I have to take the reference line. So this is the reference line. So this is the x and y. This is the x dash and y dash. Now what I have to do 125 I have to take. So I have to take 125 this is the 125 and then and 15 mm block is given. So I have to take 15 mm from this, this is the 15 mm and what I have to do? So at 40 mm, I have to take the axis line from this. I have to take the 40 mm and I will going to divide this from this point. I have to take 50 at 25 I have to take one axis line and I will going to draw the axis line. So this is the axis line at 25 and so 15 mm from this I have to take 15 and I will going to draw this block. So this is the 15 mm block I have to draw and from this 40, so this is the 40 mm from this I have to take 40 mm and I will going to draw the one axis line and I will going to draw the one axis and I will going to take 50 is the radius is given. So 25 I will going to take the half of that and I will going to take the 25. So from this I have to take 25 and I will going to draw this block and I will going to project this up to this. Now when we see from the top from front we will not going to see this hole. So we have the dimension it is given 25 from this 50 mm is the width is given and what I have to do I have to take from this axis I have to take 50 mm. So from this axis to this axis it is given 50 mm I will going to take 50 from this and I will going to from this what I have to do I have to take 25 from this then from this I have to take 25 then I will going to draw the axis line. So I have to take I have to draw the axis line near this is the axis line I have to take and on both side its dimension is given 50 mm. So on both side I have to take 7 mm, 7 mm both 7.5, 7.5 both side and I will going to draw the dotted line for that one. So because when we see from the front we will not going to see that hole then so when we see from the top we will going to front we will going to see this hole. So for that it is given 20 mm is the diameter so I will going to take 10 mm and I will going to draw the that complete circle. Line so this is how we will going to draw the our front view. So now what I have to do I have to project all this line so this is the axis line I have to draw and this is another line and also I have to draw this lines. Now what I have to do I have to prepare the 125 by 50 mm block and I will going to draw the top view from this. Now what I have to do I have to divide this 50 by half then 25 I will going to take and I will draw the axis line here and then what I have to do when we see from the top when we see from the top we will going to see this lot this lot and this surface and this hole. So for that I have to draw the this hole and when we see from the top we will not going to this hole so for that what I have to do I have to draw the dotted line through this. Then when we see from the top we will going to see this complete edge then for that I have to draw the dark line and similarly for this also I have to draw the dark line and here also I have to draw the dark line and one thing what I have to do here I will going to and I will going to take and I will going to complete the dimensions. Now what I have to do I will going to mention the dimensions so this is the 125 and pause the video and see the dimension given from center to center I hope you got this so now this is the dimension is given this dimension is given this whole dimension is 25 and this dimension is given from this it is given radius of 25 and this block dimension is given 15 mm and another dimension is given that is 50 mm this dimension is given so this is how we will going to draw the top view and front view of this simple object thank you.