10" Duplex Rule
Lot includes the slide rule in the original plastic sleeve, the two-tone plastic case, the manual, and the box. Rule is beautiful, as is the case. The rule itself was removed from the factory original plastic wrapper in order to take the photos. The cover of the manual is somewhat age-spotted. The pages are excellent except for some yellowing in the the pages nearest the cover. The box is age spotted and shelf worn, but in good condition, considering that it is 40 years old. Extremely hard to come by in any condition. Hemmi rules were second to none in terms of quality. Other manufacturers at times may have matched the quality and beauty of Hemmi rules, but never surpassed them -- ever.
I will ship anywhere in the world, excluding China. Fixed price Express Parcel postage from Taiwan is $22. (Please understand that the rule is in Taiwan and will be shipped from there, so the shipping is higher than it would be if it were shipped from the USA to the USA. This is not an arbitrary price, it is simply the cost of postage. I don't charge for packing and materials.) Parcels to addresses in the USA generally takes 4-5 days, depending on the USPS.
The following information on Hemmi slide rules in general, and the 266 specifically is quoted from Sphere Research Corporation's slide rule pages:
"Hemmi rules have a very distinctive style, with engraved and filled scales. They are very robust as a result, and do not wear out easily. Many of their rules that are more than 50-70 years old are still in wide circulation, and are still completely readable and work perfectly. Most of their rules have bamboo bodies, with laminated white celluloid scale faces. The unique non-warping and self-lubricating nature of bamboo, made these rules extremely popular, and long wearing...
Hemmi made rules for many special purposes , including civil engineering/surveying, chemical engineering, electronics, physics and mechanical engineering. Their special purpose rules, like the 266 electronics rule and 257L chemical rule are some of the best ever made, and are still highly sought after today as working rules. Their designs were very practical, and unlike north american makers, self documenting as much as possible in later plastic body designs, making them far easier to understand and use. Compared to the Pickett N16 for example (the rule Pickett promoted as an electronics rule ), the Hemmi 266 is far easier to use, has many more useful electronic functions, and does a much better job of decimal keeping in the answers and set up....
10" Duplex Rules
10" Advanced Electronic Engineering Duplex Slide Rule
Powerful and classic Bamboo duplex rule with Hemmi 2 part hard case, complete with manual. These rules were not seen in North America very often (REALLY too bad), but provide a wealth of specialized electronic calculations, including dB, Xc, XL, Frequency, impedance, wavelength, and a full function log log rule on the reverse. Very impressive rule, with self-documenting scales and quite uncommon. Dual marked scales for some functions.
(Unusual 24/26 Scales !!)
Front - LL3', LL2', LL1', LL2, A, [ B, BI, CI, C, ] D, dB/L, S, T
Back - XL, Xc, F, T1, [ T2, L, Cf, Cz, ] L, Z, fo, lambda "
You can find this and just about any other slide rule info at Sphere Research Corporation's Slide Rule Universe : Sun/Hemmi Company Archive