Tina's Japanese Slide Rules

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Electronics

Boots Ringplan 5" Standard Slide Rule. Made in Japan. I do not currently know the manufacture.

Boots Ringplan 10" Standard Slide Rule. Made in Japan.

Boots Ringplan 5" Precision Log Log Slide Rule. Made in Japan.

Boots Ringplan 10" Precision Log Log Slide Rule. Made in Japan.

Skol Forlaget Gavle AB. Loosely translated this means Gavle School Publisher. AB stands for Aktiebolag the Swedish equivalent of Ltd, Limited Company. There are no other makers marks on this rule but the design of the box and the rule looks Japanese to my eye.

Helix U Q2.

Hellerman 51. This is very similar to my Jakar 1005 hence my reason for placing this rule in the Japanese section.

Jakar 29 Student Log/Log.

Jakar 55 Rietz.

Jakar 66 Electro.

Jakar 88 College Duplex.

Jakar 523A

Jakar 1003A

Jakar 1005

Jakar 1006D

Jakar 1013.

Teknor Slide Rule, sourced from Sweden. This slide rule has no maker's marks but it arrived in a box marked Teknor. This box is identical to those housing the Technical Sales slide rules below. For this reason I am tentatively of the opinion that it was produced by Uchida Yoko.

Uchida Yoko Technical Sales Emblem Series Tutor 1051

Uchida Yoko Technical Sales Emblem Series Tutor 1051 without the K Scale.

Uchida Yoko Technical Sales Emblem Series Olympic 1052

Uchida Yoko Technical Sales Emblem Series Olympic LL 1053

Uchida Yoko Technical Sales Emblem Series Commercial 1071

Uchida Yoko Technical Sales Emblem Series Techlog 1081

Uchida Yoko Technical Sales Emblem Series 1091

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