The Vertical shaft alignment app is designed to be used with the SKF Shaft Alignment Tool TKSA 51 or TKSA 71. Together, the TKSA alignment tool and the app form an alignment system that allows vertical shaft alignments of many rotating machines to be made in an intuitive and easy way. The system uses line laser to PSD technology that enables highly accurate and reliable shaft alignments. The TKSA 51 or TKSA 71 and the apps communicate wirelessly via Bluetooth®. Without the hardware the app can