Huge product rangeOver 140,000 books & equipment products
Rapid shippingUK & Worldwide
Pay in £, € or U.S.$By card, cheque, transfer, draft
Exceptional customer serviceGet specialist help and advice
Mercator's projection, which allowed for easy navigation of the high seas with rhumb lines: clear-cut routes with a constant compass bearing allowing for true direction. But the projection's popularity among nineteenth-century sailors led to its overuse, often in inappropriate, non-navigational ways - for wall maps, world atlases, and geopolitical propaganda.