Scale Ruler
Carry a scale ruler wherever you go in your iPhone, iPad or iPod. Useful for the modeler while away from their bench. Includes a track gauge and scale styrene chart.
Supports F (1:20.3), G (1:22.5), G (1:24), G (1:29), #1 (1:32) O (1:48), S (1:64), OO (1:76.2), HO (1:87.1), TT (1:120), British N (1:148), N (1:160) and Z (1:220). Choose english or metric units.
Universal App - Takes advantage of iPad screen.
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