Construction material is not specifically mentioned in this catalogue but can be deduced from the slide rule model number. Rules with model numbers that begin with “P” (e.g., P23) are all plastic. Other slide rules are, with a few exceptions which are noted in the text, celluloid on bamboo.
Pictures: Click on any underlined item for a picture or more information.
This is an updated version of the Comprehensive Hemmi Catalog which was published in the Spring 2003 issue of the Journal of the Oughtred Society. It is based upon about 500 documents, photographs and specimen slide rules, many of which were supplied by my friends in Japan: William Lise, Atsushi Tomozawa and Yukio Kubota; I cannot begin to express my gratitude to them. Many errors exist in spite of their efforts and this catalog remains a work in progress. I will be grateful to anyone who can supply missing information or pictures or point out errors.
Paul Ross
NOTE: We hear Bill's website is down. Sorry.
Please report any problems to Tom. It would be very helpful if your report contained the browser and version you're using (e.g., "Firefox 2.0"), the operating system you're using (e.g., Windows XP), and a description of the issue. Even better, if you know how to do it, is to attach a screen shot that actually shows me what the problem is... At this writing, I have tested only on the current versions of Internet Explorer and Firefox, and only on Windows XP Pro – feedback about other browsers and operating systems, positive or negative, woudl be much appreciated!
Note the "Tweak View" box below – checking that box will show you several controls that let you "play" with the way the table is displayed. I've got it preset to what I think looks best on my computer (which has a very big screen). If you find other settings that seem much better to you, please let me know what those settings are (all of them!) and explain why you like them better.