![](oslogo.jpg)
Archive
of
Collections
Details and Image
Type | Model No. | Maker | Country | Construction Material | Date | Scale Length | Area of Use |
Linear | Sans & Streiffe / 311 | Sans & Streiffe | Japan | Celluloid over bamboo | 1960's | 25 cm | Engineering |
Notes: "This Model 311 is Sans & Streiffe’s version of the Relay/Ricoh Model 150, which was an intermediate log-log slide rule. Relay/Ricoh slide rules were always of excellent quality. "
Image 1
![](twelveinchers/images/1077a.jpg)
Image 2
![](twelveinchers/images/1077b.jpg)
Image 3
![](twelveinchers/images/1077c.jpg)
Image 4
![](twelveinchers/images/1077d.jpg)
Image 5
![](twelveinchers/images/1077e.jpg)
Image 6
![](twelveinchers/images/1077f.jpg)
Image 7
![](twelveinchers/images/1077g.jpg)
Image 8
![](twelveinchers/images/1077h.jpg)
Image 9
![](twelveinchers/images/1077i.jpg)
Image 10
![](twelveinchers/images/1077j.jpg)
Image 11
![](twelveinchers/images/1077k.jpg)