We have something similar these all over the office, they come free w/large orders from digikey and mouser I think https://www.mouser.com/images/adi-engineerin

We have something similar these all over the office, they come free w/large orders from digikey and mouser I think https://www.mouser.com/images/adi-engineering-discovery-pcbruler.jpg https://www.mouser.com/images/adi-engineering-discovery-pcbr... https://www.digikey.com/catalog/en/partgroup/pcb-ruler-12inch/57794?mpart=PCB-RULER-12INCH&vendor=8 https://www.digikey.com/catalog/en/partgroup/pcb-ruler-12inc...