Features Metric (0.5mm) and imperial (1/20" and 1/16") graduations.

• common SMD footprints,
• power ratings and Rth for common power packages,
• wire and PCB trace sizes with current carrying capacity,
• drill sizes - placed near edge, so that component leads can be trial fitted,
• AWG wire gauge, current capacity and other data,
• silk text sizes,
• unit conversion values,
• LED forward voltage drops for various colors,
• pitch gauge for 0.55, 0.65, 0.8 and 0.95 mm

What else would you like to see on a PCB Reference ruler?

Gold ENIG finish with black solder mask ... should look smart! Can't wait to see them, I have just sent to board house for a first prototype run. I will post photos when I can.

The circuit maker project is here.

Comments appreciated.