Metal detecting has come a long way since its inception in the late 1800s. From humble beginnings as a tool for finding buried objects and relics, it has evolved into a popular hobby enjoyed by millions around the world. One of the most significant developments in metal detecting was the creation of commercial models that allowed people to use them with ease. In this article, we will delve into the history of the first commercial models of metal detectors.
The first-ever metal detector was invented in 1874 by Alexander Graham Bell to locate a bullet lodged within President James Garfield’s body after he had been shot. However, it wasn’t until around 80 years later that metal detectors became commercially available.
In 1945, Gerhard Fischer developed what is believed to be the first practical portable metal detector. Fischer, an electrical engineer from Germany who immigrated to America in the early 1930s, had previously worked on various inventions such as radio direction finders and mine-detecting equipment during World War II.
Fischer’s invention used vacuum tubes and produced an audible signal when it detected metal objects. He called his device “Metalloscope” and began selling it under his newly formed company name “Fisher Research Laboratory.” The Metalloscope was marketed towards treasure hunters looking for lost coins or artifacts buried underground.
However, at around $500 per unit (equivalent to over $7,000 today), they were prohibitively expensive for most people at that time. Despite this high price tag, Fisher Research Laboratory sold enough Metalloscopes to establish themselves as one of the leading manufacturers of metal detectors in America.
Another early pioneer in the development of commercial-grade metal detectors was Charles Garrett Sr., who founded Garrett Electronics in 1964. Prior to this venture, Garrett had worked as an engineer at Texas Instruments where he helped develop transistor technology used in radios and televisions.
Garrett’s company initially focused on designing and manufacturing military equipment, including mine detectors used in the Vietnam War. In 1967, Garrett Electronics released their first metal detector for commercial use, the Deepseeker.
The Deepseeker was revolutionary because it had two search coils that allowed users to detect metal objects at greater depths than any previous models. It also featured a ground balance control that reduced false signals caused by mineralized soil.
One of the most significant breakthroughs in metal detecting technology came in 1972 when engineer Dave Johnson invented the first microprocessor-based metal detector while working for White’s Electronics. The microprocessor made it possible to create more versatile and accurate machines with improved discrimination between different types of metals.
White’s Electronics took advantage of this new technology and developed several successful lines of metal detectors throughout the 1970s and ’80s, including the popular Coinmaster series.
In addition to technological advancements, improvements were also made in terms of design and ergonomics. Early models were often large, heavy, and cumbersome to use for extended periods. However, manufacturers began producing lighter weight units with adjustable handles and armrests for added comfort.
Another notable development was waterproofing capabilities that allowed users to take their detectors underwater or along wet beach sands without damaging them. This feature opened up new possibilities for treasure hunters looking for lost jewelry or coins in water sources like rivers, lakes or beaches.
As interest grew in recreational metal detecting throughout the latter half of the twentieth century so did competition among manufacturers. New companies entered the market offering innovative designs such as Tesoro Metal Detectors’ lightweight but highly sensitive “Golden Sabre” model released in 1983 which became an instant hit among enthusiasts due to its durability & affordability price point around $300 (equivalent today around $750).
Today there are dozens if not hundreds of different brands and models available on the market catering to various budgets & needs from novice hobbyists all way up professional archaeologists. Prices can range from under $50 for entry-level models to over $10,000 for high-end specialized machines.
In summary, the development of commercial metal detectors revolutionized the hobby of treasure hunting by making it accessible and affordable to people around the world. The Metalloscope, Deepseeker, and Coinmaster series were some of the most influential early models that paved the way for subsequent generations of detectors with improved features such as microprocessors, waterproofing abilities & lightweight designs. Today there are numerous manufacturers offering various types of detectors catering to every level from beginners to professionals and every budget in between allowing anyone interested in finding hidden treasures a chance at success!