The heartbeat of every industry is thepump. One of the prerequisites to allow your pumps to work efficiently is proper shaft/coupling alignment prior to start-up and subsequent to any maintenance repairs.
Reliability requires precision alignment. That is why the PDF, "Why Alignment," "Advantages of Laser Alignment," "Benefits of Precision Alignment" and other subjects make it clear how beneficial it is for today's reduced staffing of maintenance departments to use the proper tools to save time and energy.