Why are my footprints too small?

Layout Footprints
1

It is like the title says. The foot print is smaller than it is drawn. The magenta circle is 100 mils (2.54mm) in the footprint editor. On the layout it doesn’t fit the 4 holes that are 100 mils apart. The board image was checked against the real one for size, the holes are 100 mils apart.
image

for those wondering:
I am trying to document an old “digital controller” so I can fix it. The one board most protected has the most corrosion. A tuning diode “exploded” (swelled and broke the glass) and there were several resistors with no skin or just dust.

I hereby certify that I am not simply asking someone else to design a footprint for me.

2

You must have some type of scaling issue with your PCB image.

1 Like
3

If the magenta circle is 2.54 mm diameter that means by applying Pythagoras, the distance between adjacent pins is 1/sqrt(2) of 2.54 mm. So you need to pick another footprint.