Hanson Slide Squareby CH Hanson

    The Hanson Slide Square ($10) may not look like a rafter square, but it does everything the conventional triangular versions do -- and then some. In addition to marking and measuring angles for rafter cuts, it works as a slide caliper and anchor-bolt locator. Plus it fits in your back pocket and costs only $10. 800/ 827-3398. www.chhanson.com