Ebisu Diamond’s card level isn’t so much a “wow that’s so cool!” tool — it’s more of a “that’s pretty neat” tool. The 6mm thick, credit-card size level incorporates level, plumb, 60° and 45° slope, and 1 and 2 percent grade measurements into a single bubble vial. ED makes the card level from precisely machined acrylic, so it’s nearly indestructible.
Made in Japan and seemingly only available in Europe, if you can find the Ebisu Diamond card level it’ll cost you around 9 Euros. At today’s conversion rate, that’s a little over $14 — of course, you’ll have to factor in shipping across the big pond, if you happen to be in North America.