IEM was founded more than 15 years ago to design and market unique rugged metrology and datalogging products to the railroad industry. One of our products, the Electronic Wheel Gauge, is now the only alternative method of properly NDE approaches. EM was founded more than 15 years ago to design and market unique rugged metrology and datalogging products to the railroad industry. One of our products, the Electronic Wheel Gauge, is now the only alternative method of properly NDE approaches