Ideal for fabricators, engineers, designer, and students who likes to simulate the tape measuring feelings. it is fun with a short learning curve and you can verify the input data before performing the calculations. The whole operation is at your finger tips. It is especially good for aluminum framing fabrications. Features are: 1. can run continuous calculations(with full version) 2. can modify your input data during the process. 3. output formats cover up the Imperial and Metric(SI units) system. 4. results can be emailed. 5. 6 accuracy levels: 1/8", 1/16", 1/32", 1/64", 1/128" and 1/256" where 1/32" accuracy level is generally standard for aluminum fabrications.