tesoro small knob

By Ron Barnes I would like to begin this article with a sincere “Thank You” to James Gifford of Tesoro Electronics for selecting me to perform thi...

by L. David Keith By the time I received my Vaquero for field testing, I had high expectations for testing it in the Virginia soil at the 2004 GNRS...

by Michael O. Smith I've owned and used Tesoro detectors for years, so when I received the new Cortes for field-testing, I couldn't wait to get sta...