See how tool materials and designs have changed over the years as experts compare tape measures, squares, bevels and more.
More in Home Improvement
Some Nineteenth century American tri-square had rosewood stock and brass escutcheon braced the blade in place. Contrast that with the modern cast aluminum speed square. It has a lip that registers against the piece you're measuring to hold it in place while you mark off 90 or 45 degree angles. The yellow plastic triangle in the center, folds up for portability.
How to Build a Retaining Wall (05:56)
A Sharp Edge (02:31)
Installing Hardwood Flooring (01:29)
Work and Play in Divided Space (00:03:46)
Step 3: Prep the Materials (02:16)
Tips for Preventing Mold (01:59)
Safety Speed Cut Panel Pro Saw (01:40)
Home Theater Hub (20:01)
Deck Water Features (00:52)
Cozy, Stylish Midcentury Bath (00:03:18)
Herbs and Sprouting Seeds 18 Photos
Stylish and Unique Headboard Ideas 9 Photos
© 2014 Scripps Networks, LLC. All Rights Reserved.