Which product design innovation was specifically created to help architects draft complex curved surfaces before computer modeling became standard?

Test your knowledge about landmark product designs that revolutionized architectural practice! This quiz explores innovative products that changed how architects approach their craft. From materials to tools to construction systems, product design has been crucial in advancing architectural possibilities throughout history. See if you can identify these game-changing architectural product innovations!

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The Flexicurve - a malleable lead-core ruler that could be bent and shaped to trace curves
The French Curve set - precision templates made from transparent plastic for drawing standardized curves
The Spline - a flexible strip typically made of wood, plastic or metal that was held in position by weights called ducks
The Rapidograph - a technical pen with tubular point that enabled consistent line weights for curved details