Object number:
H69.42.25B
Object name:
parallel ruler
Date made:
Late 19th century
Material/Technique:
Wood and brass
Dimensions:
H: 2.375 in, W: 11 in, D: 0.25 in
Credit line:
Museum Purchase
Copyright status:
Copyright Undetermined
Physical description:
Wood and brass parallel ruler.
Content description:
Parallels (4) antique navigational instruments. Description: 3 wood, 1 brass made in S.F. Dimensions: a. 6x1 1/2" b. 11x2 1/4" c. 17 3/4x2 3/4 d. 18x3" From the History Information Station Object: Three wood and brass parallel rulers used in Europe in the 18th or 19th century for plotting a ship's course on a chart or map. History: These rulers are designed for drawing parallel lines. They are made of straight rulers connected by jointed cross-pieces so that they are always parallel, at whatever distance they are set. Museum Purchase
Currently on display in the Gallery of California History
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