I've got questions about a couple items that need to be purchased.

I've got a 1/4" 11x14" piece of glass that I plan to use for contact prints in my darkroom. I haven't used it yet but I thought I could either lay paper, negs and glass on the baseboard, or get some thin foam to lay on top of the baseboard first. Will this work for the project? Or do I need to purchase the contact frame that was suggested?

Also we need a "reliable" scale that measures as low as 0.01 g. First could I get some recommendations as to which ones are "reliable?" Also what's the top end the scale should be able to measure? Some are 20g, some 500g, etc.

Would either of these fit the bill?