Weems & Plath Marine Navigation Proportional Divider
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Weems & Plath Marine Navigation Proportional Divider Overview
Proportional Dividers A highly accurate speed-time-distance computer, long used by draftsmen and chart makers. Its unique advantage is that distance, picked off the chart between divider points, can be immediately converted to the unknown speed or time. M
Weems & Plath Marine Navigation Proportional Divider Feature
- Made in Germany
