Puzzle piece cutting boards. Excellent example of clever kitchen equipment. These can be extended to use as a serving board, hold a wine glass or hung in the kitchen as a nifty decorative accessory. I give it an A.
14 Measuring Tips & Techniques for DIYers ... Add Fractions Fast ... adding 1-13/16 in. to 3-3/8 in. (or any other fractions) doesn't have to hurt. Just line up two rulers or tape measures side by side & read the answer instantly, with complete accuracy.