IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. To count revolutions of the shafts ...

Google Maps users in several countries are reporting the rollout of a highly-anticipated feature, the speed limit indicator. The feature was first released last year, but not all markets where Google ...

This small circular instrument measured spindle rotation speeds. The inscription on the face reads “McDonnell Odometer Co. / Chicago, Ill.” A label in the lid of the box reads “The Lightning Speed ...