view pirelli/scale @ 192:5d84f63eff72

grokdsn: able to follow the FAT chain for the directory
author Michael Spacefalcon <falcon@ivan.Harhan.ORG>
date Wed, 07 Jan 2015 07:12:51 +0000
parents d05b2e790e6b
children
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Seeking to establish the scale between pixels and mm
Measuring the S71PL129NC0 footprint on L8

4 corner balls of this fp:

	(4698,443)	(5250,443)

	(4697,893)	(5249,895)

rounding width to 552 pixels, height to 450 pixels
the actual dimensions are supposed to be 8.80x7.20 mm

estimating somewhere between 62.5 and 62.8 pixels per mm