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We're interested in hearing from you.......

When first compelled to amass this material, I was immediately confronted with the simple fact that there is very little information available about the history of polygraph instruments. When contacted, even the instrument manufacturers could not give me a history of their instruments.
I have put together what I believe to be a factual and accurate history of the manufacture and use of these instruments, but errors could have been made. If you have any information about these instruments that contradicts mine, please contact me at the e-mail address below and let me know.
My record keeping is less than perfect. If you have made a donation to The Polygraph Museum in the past, and you can see that it is included in the museum as an exhibit, and your name does not appear next to the instrument, please let me know. I will make the appropriate changes to make sure you get credit for your donation.
My first effort in publishing this site was focused on getting thumbnail descriptions and photographs of all the instruments onto the web page. The next step is to include more detailed descriptions of the instruments and their uses. If you recognize your first instrument and have an interesting or amusing story about it, or maybe an interesting story about a case that was solved with it, send me an email and tell me about it. I will make sure it gets included into the museum.

Terry J. Ball
Ball & Gillespie Polygraph
190 West Dayton, Suite #103
Edmonds, Washington   98020

425-775-9015  (OFC)
425-776-0381  (FAX)


The Polygraph Museum survives on donations from polygraph examiners and other interested parties. The donations come in two forms: (1) instruments; and (2) money.
If you have an old instrument that is gathering dust in your garage and would like to find a good home for it rather than use it as a boat anchor, please consider donating it to The Polygraph Museum. Pack it well with lots of packing popcorn or suitable packing material, and mail it to Ball & Gillespie Polygraph. The Polygraph Museum will re-imburse you for your packing and shipping costs. We will accept any instrument, in any condition.
We are partcularly interested in Keeler Models #301 and  #302. We have also been looking for an example of a  Reid Instrument for years. And we would like early models of the Arther Polygraphs.
In some situations, the Polygraph Museum will consider paying you for your instrument. If you are interested in selling an instrument to us contact Terry Ball by phone or e-mail and discuss your instrument with him. If it is unique, in good condition, and is an instrument that we already don't have in our collection, we will make you an offer.
If you would like to send a cash donation to the The Polygraph Museum to help offset the cost of acquiring new instruments, repairing broken or damaged instruments,  transportation costs to and from shows, and maintaining this web site, please send your donation to Terry Ball at Ball & Gillespie Polygraph. All donations are gratefully accepted.