Danaher Corporation designs, manufactures, and markets industrial and consumer products. Located in 30 countries worldwide, its two principal business segments are: Process and Environmental Controls, which includes products such as electronic test tools, product identification equipment and consumables, water quality instrumentation and consumables, retail petroleum automation products, underground storage tank leak detection systems, and motion, position, speed, temperature and level instruments and sensing devices; and Tools and Components, a producer and distributor of general purpose and specialty mechanics' hand tools in the US.