Ask This Old House (2002)

S6E2 Carpentry Squares; Brick Patio

In the loft, general contractor Tom Silva introduces host Kevin O'Connor to various types of "squares" commonly used in carpentry. Together with plumbing and heating expert Richard Trethewey, they engage in a fun segment of "What is it?" Later, Roger assists a homeowner in constructing a new patio using concrete paving bricks.