Fisher Research Laboratory - manufacturer of metal detectors for homeland security, industrial and hobbyists alike

• http://www.facebook.com/pages/Fisher-Research-Labs/111854762303071
• https://www.instagram.com/fisher_metal_detectors/
• http://detecting.com/index2.html
• http://www.tekneticst2.com/
• http://detecting.com/store/
• http://www.igen2020.com/
• http://www.nightowloptics.com/
• http://www.nivisys.com/en/
• http://fisherlab.com/hobby/deetectors-f-series.htm#f44