<caption><image_7>The image is a screenshot of a computer screen showing a technical drawing of a valve. The drawing is in Autodesk Autocad, a software used for drawing and designing mechanical components. The main focus of the image is on the valve, which is a type of valve with a handle and a valve stem. The valve is shown in a 3D view, with the dimensions of the valve clearly visible.

On the left side of the drawing, there is a label that reads "8.07" and on the right side, there are two valves, one labeled "28.0" and the other labeled "26.37". The valves are connected by a series of wires and cables, which are likely used to control the flow of liquids or gases in the valve.
- On the top right corner of the screen, there appears to be a toolbar with various tools and options for creating and editing the drawing. The background of the screenshot is black, and the drawing itself is white.</caption><caption><image_8>The image is a screenshot of a computer screen displaying a technical drawing in Autodesk Autocad. The drawing is a technical blueprint of a machine with various components and measurements. The main focus of the image is on the top left corner of the screen, where there are various tools and options for creating and editing the drawing.

On the top right corner, there is a menu bar with various options such as File, Edit, View, Tools, and Help. Below the menu bar, there are several buttons and menus for editing, editing, and creating the drawing, as well as a search bar for more information about the drawing and its dimensions. 

In the center of the drawing is an illustration of the machine, which appears to be a large, cylindrical machine with a circular base and a handle on the right side. The machine is shown in black and white, with the numbers "R123.92" and "1225.00" written on it. The dimensions of the model are also visible on the bottom right corner.</caption> then go for the Auckland select yeah any of thought to specify the arc length now we select a rock now the Auckland two then go to specify the radius and then go to the ordinate dimension model a dimension is the most important type of dimension which is must necessary during the machining process so we have to specify the cornice one by one to get the ordinary dimension which starts from zero now all the ordinate dimension is at last we are going to discuss about select any of the entities to specify
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