Amazon.com description: Product Description: The only blueprint book specifically for HVAC, this all-in-one text covers the gamut of blueprint reading, freehand sketching, and drafting for intermediate students. Various sections cover drawings, scales, symbols, and more, including plans from electrical to plumbing. The crystal-clear text stresses practical applications, while review exercises further enhance understanding. The final section asks students to obtain key information from actual building plans for a small commercial building..