INCHMATE 2000 Construction Calculator - Calculate and convert between feet, inches, fractions-of-an-inch, decimal feet, yards, miles, kilometers, meters, centimeters, and millimeters including square and cube of each. Dedicated fraction keys for direct entry with a single stroke. Calculate area, circumference, and arc length of a circle. Easily calculates board feet, cost per unit, weight per volume, temperature conversions, construction functions, right angle calculations, stair calculations, weights and liquid units, and much more. Paperless tape stores up to 20 entries with easy review capabilities. Features protective flip-top cover, long-lasting lithium battery with auto-off, and one-year limited warranty.