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History of the manufacturer  

Tech Laboratories, Inc.; New Jersey

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Name: Tech Laboratories, Inc.; New Jersey    (USA)  
Abbreviation: techlab
Products: Model types

Tech Laboratories, Inc., 500 Tenth Street, Palisades Park, New Jersey.

Design, development and manufacturing of electrical, mechanical, electronic and scientific instruments and products, electronic controls, including attenuators, potentiometers, tap switches, precision resistance instruments, electronic bridges, measuring instruments and electronic control equipment.

Founded: 1947

This manufacturer was suggested by Otmar Jung.

Some models:
Country Year Name 1st Tube Notes
USA  70 Attenuator LA-621.5   Attenuator LA-621.5 0...30dB, 20 steps @ 1.5dB. Impedance: In/Out: 600/600 Ohms.