B chapter.indd - Charles Babbage Institute - University of Minnesota

194
Erwin Tomash Library
Bramer, Benjamin Bramer, Benjamin
there he worked as an assistant to Kepler, mainly doing
calculations. See Bramer, 1684 (Apolonius Cattus), for
a portrait of Joost Bürgi.
This volume is a description of a simple triangular
instrument used for surveying tasks. Its use is illustrated
with many examples taken from civilian and military
life. One of the most interesting is the description of the
instrument being used underground in a mine.
Illustrations available:
Title page
Triangular instrument in use.
B 230
Bramer, Benjamin (ca.1588–1650)
B 229
Trigonometria planorum mechanica. Oder Unterricht
unnd Beschreibung eines neuwen und sehr bequemen
Geometrischen Instruments zu allerhand Abmessung
und Solvirung der Planischen Triangel derogleichen
bisshero nicht gesehen geworden
Year: 1617
Place: Marburg
Publisher: Paul Egenolff
Edition: 1st
Language: German
Figures: 3 engraved folding plates,
Binding: modern vellum
Pagination: pp. 101, [1]
Collation: A–M 4 N 3
Size: 119x152 mm
Reference: Pogg Vol. I, p. 274
This small work describes a plane table (see Ceneri,
Angelo Maria; L’uso dello strumento geometrico detto
la tavoletta pretoriana, 1728, and the Appendix essay
on surveying instruments) that is slightly different from
others in that the table is marked with angles and divided
to resemble squared graph paper to make it easier to read
distances from scaled drawings.
Bramer wrote at least three of these small volumes in
the 1616–1617 period, and the publisher used the same
title page format on this volume as on the 1616 work
(Beschreibunge und Utterricht).
Illustrations available:
Title page
Plane table
B 230
Plane table, B 230