Description and Notes:
This rare device is used for drawing equal spaced inclined parallel lines, such as those found in machine drawings to represent section views, and hence the name - Section Liner. The slope of the inclined ruler can be set to one of seven preset positions on the rack, and the advance of which is activated by pressing a lever ratchet.
This instrument is made of nickel silver, and is stored in a velvet lined, leather and cloth covered wooden case. In addition to the maker's signature stamped on the base plate, an unique identification number "27" was stamped on every component of the device. This may indicate that it was individually made or adjusted by hand in the early twentieth century.