Pocket Guide (Ten Books) companion to the reference and workbook Geometric Boundaries II, ASME Y14.5 - 2009 The Interpretation and Application of GD&T. Book measures 4.25" x 5.5" and has 88 pages including the front and back covers. Booklet covers all dimensioning and tolerancing basics in a easy to read format. Back outside cover has a geometric characteric quick reference chart. Book includes a tolerance conversion chart.