(from the article `metalwork`) ...19th century brought about a revival of pewter production; and individual firms succeeded in making original, well-designed pieces that are often ... Found on http://www.britannica.com/eb/a-z/k/17
The kayser is the unit of wave number (number of waves in a unit length), used in spectroscopy. It is expressed as waves per centimetre, and is the reciprocal of the wavelength. A wavelength of 0.1 cm has a wave number of 10 kaysers. Found on http://www.probertencyclopaedia.com/browse/AK.HTM