They have a great structural diversity, but are usually divided into two basic groups : the hydrolyzable type and the condensed type.
2.
The " Aldino " italic type, commissioned by Manutius and cut by Franceso Griffo in 1499, was a closely spaced condensed type.
3.
Based on the humanist cursive script first developed in the 1420s by Niccol?de'Niccoli, it served as a condensed type for simple, compact volumes.
4.
If the boiler is of the high efficiency condensing type, high turndown ratios are feasible and the higher the "'turndown ratio "', the more efficient it will be.
5.
The engine was a compound double expansion condensing type, with a high-pressure cylinder of 8-inch diameter and a low-pressure cylinder with a 16-inch diameter, with both cylinders having a 9-inch stroke.