Measurements

I'm a little panicked right now. The batteries died on my scales and I've got to make San Joaquin sourdough for tomorrow night's guests--provided we're all dug out from the blizzard by then--using this recipe: 

http://www.thefreshloaf.com/node/12383/san-joaquin-sourdough

If anyone can give me an easy conversion site, or has done the conversions already for want of a scale, I'd be most grateful.