How do I visualise dip unit for HDPI screen?

问题

For a 160dpi (MDPI) screen, 1dip is 1px, as shown below,

For a 320dpi (XHDPI) screen, 1dip is 2px, as shown below,

For a 240dpi (HDPI) screen, 1dip is 1.5px, But,

How do I visualise 1dip in pixels for 240dpi (HDPI) screen?

来源：https://stackoverflow.com/questions/33783645/how-do-i-visualise-dip-unit-for-hdpi-screen