The "National Mechanical Estimator" by Victor Ottaviano is a textbook published in 1975 in English. Authored by Victor Ottaviano and published by Ottaviano Technical Services, the book focuses on mechanical estimating in the subject area of mathematics. With a height of 2 inches, length of 12 inches, and width of 12 inches, this textbook weighs 12.8 ounces and is designed to provide guidance on estimating mechanical labor costs.