A free program for Android, by S Bharadwaj Reddy.
Instrumentation Tools is an Android app for instrumentation engineers and electrical engineers. It provides an easy-to-understand and handy reference for instrumentation principles, concepts, tools, and applications. The app covers all kinds of electrical engineering topics and provides instrumentation engineers with a quick reference guide.
Instrumentation Tools includes articles, videos, and easy-to-understand concepts. You can also access the online tools and MS Excel spreadsheets to get more information about any topic. The app contains all kinds of instruments, measuring instruments, test equipment, signal and power analyzers, data acquisition systems, and more. You can also find articles about the basics of electricity and electronics.