Unitron is a US based company and distributor of optical instruments including microscopes, binoculars, and telescopes; formerly made by Nihon Seiko of Japan. Unitron was founded in 1952 and is based in Bohemia, NY. Although they no longer sell telescopes they still sell replacement parts.
The Unitron telescopes included 2" to 8" refractors, and were noted for their high quality specifications and metal and wood construction.[1]