The #1 Mechanical Engineering app available on the App store. Calculate Bolt torque and yield, Flange Compression, Pipe Headloss, Pipe Volume, Velocity, Diameters and travel time. Use different grades of bolts with heaps of different lubricants and materials. Switch between metric and imperial units with ease. The Calculation result can also be sent via SMS or emailed instantly to users in the field or Office based personnel! Calculate tank volumes, tank fill and empty times & size orifice plates for any given flow. All of this plus much much more!