Before revision: New isometric exercise tools often used force gauges and a micro processor and then output the force onto an lcd screen or store the information o later be downloaded onto a computer .
After revision: New isometric exercise devices such as Jym often use ftounlike older isometric exercise devices such as a bullworker which record the users output in a analogue formatrce gauges and a micro processor and then output the force onto an lcd screen or store the information o later be downloaded onto a computer .