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The 8 inch long Proportional Divider is a highly accurate speed-time-distance computer.
Use to accurately calculate speed-time-distance. Easily transfer points between different scale charts. Distance, picked off chart between divider points, can be immediately converted to speed or time. Silver/ nickel alloy with stainless steel points. NSN: 6605-00-682-4548.
Vendor: Weems & Plath
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226 W. Florence Ave | Inglewood, CA 90301
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