1. Rear of slide rule has table of sin and tan.
| Slide rules HOME page | COLLECTION | 5" RULES |
| Make | Unique, England |
| Model | Log-log |
| Notes 1. Rear of slide rule has table of sin and tan. |
|
| Front view |
|
| Detail - left front view |
Detail - trig tables on back of rule |
| Manufacturing date | Circa 1940. Cursor is metal and plastic which was only used on early models. |
| Length | 5" |
| Material | Plastic on mahogany |
| Scales | LL1,A [ B,CI,C] D,LL2 |
| Gauge points | p: 3.14: A,B,CI,C,D |
| Cursor | Plastic with metal frame top and bottom |
| Hair lines | None |
| Documentation | None |
| Condition | Complete in cardboard box. |