Boulitte Polygraph Antique Cardiograph Lie Detector 1920's - 1930's

Description

Boulitte Polygraph Antique Cardiograph Lie Detector Polygraph. Condition is "Used".  The Boulitte Polygraph was manufactured by G. Boulitte in France.  This is a beautiful instrument that I have had for several years.  Attachments are as shown.
I have had several questions in the past about the serviceability of these older instruments. This instrument is likely from the 1920’s or 30's.  This is being sold only as a collectible or as a movie / TV prop.  Generally considered to be outdated based on the professional standards these days.  Please see photos for description and feel free to ask questions. Feel free to ask questions. No guarantees or warranties. (FBI CIA Army Marines Navy CID Police Law Enforcement Interview Interrogation lie detection detecting crime criminal history antique Medical Respiration Cardiology Physiology )
Please note that the pump bulb is dry and hard.