This is a list of my most often used engineering calculators.
http://easycalculation.com/physics/classical-physics/moment.php
http://easycalculation.com/mechanical/deflection-hollow-rectangular-beams.php
http://easycalculation.com/mechanical/deflection-round-tube-beams.php
http://easycalculation.com/mechanical/deflection-solid-rectangular-beams.php
http://easycalculation.com/mechanical/deflection-solid-round-beams.php
https://itunes.apple.com/si/app/right-angle/id292390648?mt=8
http://www.wiresizer.com/
http://www.syclabs.com
https://itunes.apple.com/lv/app/imachinist/id377711549?mt=8
https://itunes.apple.com/gb/app/etools-pro/id480157834?mt=8
http://trunnion.info/elecref.html
http://www.millerwelds.com/about/news_releases/2011/miller-electric-mfg--co--develops-miller-weld-setting-calculator-for-iphone--millerwelds-com-
https://itunes.apple.com/us/app/bolt-hole-circle-calculator/id587069250?mt=8
