Siderography is a mechanical process developed by Jacob Perkins in the early 1800s enabling the unlimited reproduction of engraved steel plates. The process enables the transfer of an impression from a steel plate to a steel cylinder in a rolling press.

What does Carouseled mean?

1 : a tournament or exhibition in which horsemen execute evolutions. 2a : merry-go-round. b : a circular conveyor the luggage carousel at the airport. c : a revolving case or tray used for storage or display.

What does 0R mean?

0R (zero R) or 0-R may refer to: 0r, an object with a radius of zero. 0-rated supply, or Zero-rated supply, items that are not charged a tax on their input supplies. 0 risk bias, or Zero-risk bias, irrationally valuing complete elimination of a risk, to a reduction in a greater risk.