MartelTestTools.com is a new site developed by Martel Electronics Corporation. Martel has been a leading manufacturer of Process Control Calibration equipment (www.martelcorp.com) for the past 15 years. This new site was ......MartelTestTools.com is a new site developed by Martel Electronics Corporation. Martel has been a leading manufacturer of Process Control Calibration equipment (www.martelcorp.com) for the past 15 years. This new site was developed to meet the needs of our customers requiring additional types of test products to meet a wide variety of Test and Measure requirements.