This armature plate revolved in front of a field plate carrying two pieces of tin-foil backed up by larger pieces of varnished paper.
A yard scale of varnished paper, made out locally for quadrant elevation with regard to height of site, was usually pasted over this.
The axis P N is made of varnished glass, and so are the axes that join the three plates with the brass axis N 0.
The articles are first fashioned by joining the soft material; they are then varnished, and afterwards cured in ovens heated to about 135° C. The fine vulcanized " spread sheets " are made by spreading layers of indiarubber solution, already charged with the requisite proportion of sulphur, on a textile base previously prepared with a mixture of paste, glue and treacle.
Sempervirens, varying from brownish red to very deep brown; oiled and varnished, it has been used in cabinet work.
The glass plates are well varnished, and the carriers are placed on the outer sides of the two glass plates.
The distinctive mark of the courtier, military, and upper servant class is the belt, generally of black varnished leather with a brass clasp; princes and courtiers often replace this clasp by a huge round ornament of cut stones.