Diagram illustrating the method of ascertaining longitude using astronomy. Adapted from a coloured engraving by John Emslie (1851). Emslie was a British cartographer who also produced stunning educational posters reflecting developments in the Industrial Revolution and the understanding of the natural world. Wellcome Collection.
Printed with vegetable-based inks on a carbon neutral press using responsibly sourced, acid free paper. Shipped plastic free.
490mm x 700mm
Please note: this sheet will be folded flat for shipping.
