Building a case for an old AT board and I needed a drill pattern for the Baby AT form factor, taking measurements from a real board but found the pattern on the net
I completed a design in Kicad and in QCAD
BabyAT Reference source
https://flylib.com/books/en/4.57.1.41/1/
Might as well add ISA and PCI slots to allow aligning cards
ISA first pin to the left edge of the board .500
ISA first pin from the center of the front drill points .600
ISA Typical between connectors .800
PCI first pin from the center of the front drill points 1.225
PCI Typical between connectors .800
