Sperry gyro-compass and gyro-pilot Publication no. 17-1608

The Smithsonian catalogs Sperry gyro-compass and gyro-pilot Publication no. 17-1608 as books in its Gyro compass records.

WHY IT’S INTERESTING

Trade literature.

SERENDIPITYA little unexpected

FamiliarWeird

A CLOSER LOOK

The Smithsonian lists the object under Gyro compass and dates it 1924.

Trade literature.

FOLLOW THE EVIDENCE

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