Need help from the greyhairs!

[skunked_once]

I have been invited to present a talk on gas chromatography (gulp) and have decided to include review of the changes in instrumentation over the last 30-40 years. Unfortunately I no longer have access to some of the old equipment that I used early in my career. I am asking for help in finding pictures of the following instruments.

Barber-Coleman floor model gas chromatograph, late 60's vintage.
Tracor 222 floor model gas chromatograph.
Coulson Conductivity detector.
planarimeter for measuring peak area.

Any pictures used in my presentation will be acknowledged. Thank you in advance!

Leonard

[bisnettrj2]

I'm no greyhair (just a few here or there!), but I found this on Wikipedia:

http://en.wikipedia.org/wiki/Planimeter

http://commons.wikimedia.org/wiki/File:Planimeter.jpg

[Consumer Products Guy]

Talk about measuring peak heights and widths with a ruler to calculate on your slide rule. Or cutting out the peaks and weighing the papers !!!

[bisnettrj2]

You might want to try the archives of ACS Chemical and Engineering news for old advertisements...

http://pubs.acs.org/doi/pdf/10.1021/cen-v040n039.p012

[bisnettrj2]

http://www.umesc.usgs.gov/images/photos ... h_1965.jpg

http://www.umesc.usgs.gov/images/photos ... orypic.jpg

Found these, too.

[skunked_once]

Hey! Thanks so much for the links! I knew that this was the place to ask for help. Keep the ideas coming.

[gcguy]

I found an old planimeter in a cupboard. It was in a lovely old faded velvet covered box. Those were the days when precision instruments were treated with a sense of awe. Measuring devices could be polished to a high shine and were usually made of brass and were to be treasured, almost worshipped...lol
I have never used it, perhaps I should get the next "new guy" to try it out.

GCguy