Archived - Standard Industrial Classification - Establishments (SIC-E) 1980
- E - Manufacturing Industries
- 39 - Other Manufacturing Industries
- 391 - Scientific and Professional Equipment Industries
3912 - Other Instruments and Related Products Industry
Establishments primarily engaged in manufacturing professional and scientific instruments excluding electronic navigational instruments. Establishments primarily engaged in manufacturing electronic navigational instruments are classified in 3359 - Other Communication and Electronic Equipment Industries.
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