Not sure what your monitor size is ?
Monitor Size: Unknown
Incandescent light bulb e27 size
Irobot roomba 560
Blackberry pearl 8100 smartphone sapphire t mobile 2
Ping pong ball
spot on, thanks
Measuring from edge to edge of my Apple iPad 2 it's 7.9 inches, with that being said its right at 6 mm. Thank you