Front
Back
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![]() Front Right |
![]() Back Center ![]() Edge view, showing how two slides are linked together |
This rule is marked as ASTON & MANDER Scott's Patent Slide Rule. It is desined to
calculate the weight of any material. It can be either a sheet or a rod form. With the second slide,
it can handle variety of materials ranging from as light as cork to as heavy as lead. |