Slide rules HOME page | COLLECTION | 5" RULES |
Make | Unique, England |
Model | Dualistic |
Notes 1. This rule had split scales, that is 10" scales on a
5" rule. They also produced a 10" rule with 20" scales. |
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Front view |
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Detail - left front view |
Detail -properties of metal tables on back of rule |
Manufacturing date | Estimated as 1950. |
Length | 5" |
Material | Plastic on mahogony |
Scales | P1,D2 [C2,Q1,Q2,C1 ] D1, P2 |
Gauge points | p: 3.14: A,B,CI,C,D |
Cursor | Plastic with plastic frame top and bottom |
Hair lines | None |
Documentation | Good. Cardboard box also good. |
Condition | Complete in carboard box. |