title: which measurement is the height and weight in netbeans properties
body: <p>can anyone please tell me in which measurement is the height and weight in net-beans IDE component properties meant to be.
  whether the measurement in cm, mm, or inches .... what does the 501 and 20 stands for ?</p>
  
  <p><img src="https://i.stack.imgur.com/sSxbC.jpg" alt="enter image description here"></p>