Optical instrument produced by The Association of Workers in Precision Instruments (A.O.I.P) , it was   a workers' production cooperative created on March 10, 1896 in Paris in the 14th arrondissement. At the end of the 19th century, 64 workers from the Chambre Syndicale des Ouvriers en Instruments de Précision in Paris met to create their business.
Rewired with US standart plug.
H.16 x top 8x4.5  in , lenses in good condition , working condition with som oxidation.