Why use our VOD Meter? Uttam Blastech’s VOD meter was produced after extensive research and development by some of the most experienced minds in the industry. Ultra-portable and handy, our VOD meter helps you evaluate the quality of explosives by accurately measuring: Velocity of detonation Accuracy of delay time up to a nanosecond. Continuity of detonation of explosives. The Delay Timer and VOD Meter comes with an IP65 protection against dust and water, with an easily readable graphic display, & calibration reminder.