Antique Rare MacKenzie Polygraph Machine in Original Case – Early 1900s. Very interesting small machine. Wind the small end winder and some type of a clockwork device ticks away for awhile. Then if the other larger winder is wound some the little polygraph paper reel roller rotates (after the clock part stops ticking I guess – I looked over and it was turning – can’t really get it to do it on command – so hmmmm – there is also a on/off and some type of a calibration screw control). I do not have access to the instructions, so I know there is much more to getting it to work properly. All parts shown included. The tubing and leather straps have aged. The case inside has some deterioration and had some “flakes” of something in there (still a residue of that). The main metal attachments are in good condition. It looks like the original ink bottle, but is empty. The outer case is cool looking and in good condition. The case measures approx. 10″ x 6 ” 4 1/2. The metal device is approx. 4″ x 3″ x 2 1/2. I have seen some diagrams and pictures on how all this goes together. A few of these are in museums. Not many left out there. See pics for details. Questions Welcome Anytime :. Questions Encouraged Before the Sale. We Find Quality Items. We Sell Quality Items.