What slide rule is made of
An analogue instrument for multiplying with logarithms.
- Slide rule stock — has part. The fixed part with the scales.
- Sliding middle scale — has part. A movable scale.
- Slide rule cursor — has part. A transparent sight with a hairline.
- Logarithm — uses. The scales are logarithmic: multiplication becomes adding lengths.
- Wood — is made of. Slide rules were wooden, later plastic.