Sensitive Altimeter. This Android application measures air pressure using internal barometric sensor in the portable device and displays it on a three-pointer altitude indicator similar to the altimeter gauge in aircraft. Digital indication is also available.
It can take a long time. Some employers move very quickly, and others move very slowly. People have been hired three hours or three months (or more) after interviewing. Moreover, hiring nearly always takes longer than employers expect it will; you should generally double or triple whatever timeline they give you.
10 to 20 Minutes. Most interviews take 10 to 20 minutes. The interviewers will want you to do most of the talking, but you should try to make your point efficiently. When you are asked a question, organize your thoughts and answer the question completely.