The second finger (third digit) has the most literal meaning of all. Less commonly referred to as the long or tall finger, the digitus medius manus sits in the center of the hand, right between the digitus secondus manus and the ring finger. How the middle finger became an offensive gesture is another story altogether.
To see how the pump works, look at the drawing below. The pump consists of a small diameter pipe (called the piston) inserted into a larger diameter pipe (called the cylinder). The drawing shows the pump at two points during its operation. The top drawing shows air being drawn into the pipe by pulling out the piston. The bottom drawing shows air exiting the pipe when the piston is pushed back in. At the right end of the pipe is a commercially bought one-way valve.
1 Draw your Path or Polygon-Click in the 3D viewer to start your drawing, and use the following methods to create your desired shape: 2  Hint: To navigate in the 3D viewer while creating a new path or polygon, use the keyboard controls or the navigation panel. 3  Free-Form shape-Click once and drag.everse the process to enter free-form drawing mode again. 1  If you're creating a polygon or path, you can make the shape a 3D object. 2  Click the Altitude tab. 3  Choose the appropriate option in the drop down menu. 4  Relative to ground. 5  Relative to sea floor. 6  Absolute. 7  Use the distance slider to adjust the altitude of the polygon or path. 8  Check Extend ...