Not long ago I accidentally rolled a 2x8 onto my Construction Master II calculator, and the outcome was not a pretty sight. This left me with the choice of either buying another expensive calculator with built-in construction formulas or dredging up my trigonometry textbook and making do with a standard calculator. My decision was clinched when I had the opportunity to review the new Construction Master III. The manufacturer, Calculated Industries, has made a number of improvements to its original Construction Master II. Now the calculator is even more valuable as an on-site tool. In particular, the new version includes larger keys placed farther apart, which is friendlier to big fingers, and a larger display, which is easier on the eyes. Makes Math
