Metron Optics, founded in 1971, manufactures high-precision, high-quality, inspection mirrors, marking pens, and accessories for the electronics, industrial, medical, and various other industries worldwide. Special Ink Markers San Diego, specialty formulated, multi-purpose inks are available in a Metron Marker, pints, gallons, and syringes. The world famous Metron Marker is available in a standard tip or micro-tip needle like applicator. Inks are available in a variety of colors, many of which are very bright, and fluoresce even more under ultraviolet light. Formulas include Removable, Permanent, Solvent Resist, Solvent Washoff, Aquaclean, Transflour (invisible ink), solder fluxes, adhesives, contact lubricants, and others.