Ölçüsan Ölçü Aletlerİ Sanayi ve Ticaret Anonim Şirketi, one of the present day representatives of Ahmet Veli Menger Holding in the industrial sector, has commenced production in 1979 by establishing a factory in Lüleburgaz district of the Kırklareli province.

The factory established on a total area of 27.000m2 including 4.300m2 indoor area thereof has served as the licensed manufacturer of the German VDO Adolf Schindling and Mannesman-Kienzle firms. Ölçüsan Ölçü Aletleri San.ve Tic. A.Ş., based on more than 25 years of experience, currently produces gauges, sensors, tachographs, speedometer cables and all other required accessories for all commercial vehicles as demanded by the automotive industry of the countries of the world and particularly Europe and Turkey. Ölçüşan Ölçü Aletleri Sanayi ve Ticaret A.Ş. which adopts the notion of limitless to its customers also offers customized production possibilities to its clients. 

Tetsan Trakya Elektrik Ticaret ve Sanayi Anonim Şirketi, one of the other present day representatives of Ahmet Veli Menger Holding in the industrial sector, has been established in Lüleburgaz district of Kırklareli province, 140 km from İstanbul, in 1979, on a total area of 32.400 m2 with an active indoor area of 8.000 m2.The factory, with ISO 9001 certificate, as the certified licensed manufacturer of Switzerland originated ASEAN Brown Boveri & Cie and Germany originated ABL-Sursum companies, has produced low-voltage switch equipments, switches / miniature switches, fuses, motor protection switches, various types of relays and other accessories. With its large and comprehensive machine park and computer controlled casting bench factory has a high-capacity of production. Tetsan Trakya Elektrik Ticaret ve Sanayi Anonim Şirketi which follows a flexible production policy provides customized manufacturing possibilities in addition to standard products.