. American engineer and railroad journal . Fig. 2. BoarJ at an atigleof Gu°. SVENSONS down in a horizontal position, as shown in fig. i ; it can beraised to an angle of 60, where the draftsman prefers a sittingor standing position, as is shown in fig. 2 ; or it may be set atan angle of 45°, which is a convenient position when writingor lettering has to be done. At either the 60 or 45° angle theboard can be raised or lowered over a range of about 3 ft. Afourth position may be mentioned, in which the board can beraised so as to clear the table altogether, permitting the latterto
. American engineer and railroad journal . Fig. 2. BoarJ at an atigleof Gu°. SVENSONS down in a horizontal position, as shown in fig. i ; it can beraised to an angle of 60, where the draftsman prefers a sittingor standing position, as is shown in fig. 2 ; or it may be set atan angle of 45°, which is a convenient position when writingor lettering has to be done. At either the 60 or 45° angle theboard can be raised or lowered over a range of about 3 ft. Afourth position may be mentioned, in which the board can beraised so as to clear the table altogether, permitting the latterto be used as an ordinary desk. The ruler shown is a great addition lo the convenience ofthe board. It moves easily, is accurate, and can be adjustedquickly. All the parts of the mechanism, except the straightedge, are out of sight, and protected from accidental carries a convenient shelf for instruments. The ruler may be lifted from the paper far enough to pass itover a wet ink line, without disturbing the attachment to thecor
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
