Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Frequently referred to as the Machinists Bible.

The Machinery's Handbook has been frequently referred to as the Machinists Bible for as long as I can remember. It contains an incredible wealth of information that everyone in the mechanical trades will immediately appreciate.Detailed information about practically any mechanical problem, ranging from the basic lever and wheel, right through to rapid prototyping. At this point I can honestly say, that I have always found the information I needed in less than 4 minutes. Exact, detailed information.The only area that I found the book lacking in, is the exclusion of European standards. For instance DIN reference numbers, but as the world is heading toward ISO9000 the old reference numbers are becoming obsolete in any case.It's price of $80.00 may seem steep, but in comparison to the other works out there, it is reasonable. All in all, if you work in the mechanical trades, you cannot afford to pass up this book.