Public Standards of Length
19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

šŸ“œ Brass placard outside the Royal Observatory in Greenwich, installed in 1866. šŸ” Measures official lengths of yard, foot, and inch.

Why Go

šŸ”¬ Verify measuring sticks with historical precision
šŸ•°ļø See a monument to precision and industrial history
šŸ“ Located near the Shepherd 24-hour Slave Clock and Meridian Laser

Tips

šŸŒ”ļø Standards are accurate at 15.5Ā° Celsius.
šŸ‘€ Find measures outside the observatory complex, right of gates facing meridian line, under the clock.

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