The type of load cell needed is dependent on the primary and secondary elements used to sense force. However, generally speaking, there are five different types of load cells; strain gauge type load cells, hydraulic load cells, diaphragm load cells, spool load cells, and ring type load cells.
A torque wrench is used to when a particular torque is needed to fasten a nut or bolt. The torque wrench was invented in 1918 by Conrad Bahr. He worked for the New York City Water Department at the time he invented it.
The different types of load cells have different advantages and disadvantages, and the one you need will depend on a broad range of factors. For example, hydraulic load cells will operate in negative 60 degrees temperatures, while others will not.
The majority of load cells commonly used utili