Investigation of the accuracy of plotting and
scaling-off
N.D. Haasbroek
Nederlandse Commissie voor Geodesie 10,
Delft, 1955. 176 pagina's.
ISBN-13: 978 90 6132 017 3. ISBN-10: 90 6132 017 8. € 18,00
Introduction
As far as I know little has been published in literature concerning
land surveying about the accuracy of plotting and scaling-off with
divider and plotting scale or with tracing point and engineer scale.
Only a rather circumstantial paper by Kummer (Mitteilungen von
Beobachtungsergebnissen über die Schätzungs- und Kartierungsgenauigkeit
an Mass-stäben und Kartierungsinstrumenten) in Zeitschrift für
Vermessungswesen (year 1907 page 531, 561, 593) deals with part of this
subject.
In the following paper the whole procedure of plotting and scaling-off will
be submitted to an accuracy test. By applying the law of propagation of
errors one may form an idea of the accuracy of plotting and the accuracy
with which distances and areas can be scaled-off from a plot. Finally,
theoretical results will be checked in practice and conclusions will then be
drawn.
Contents
I. Determination of standard errors 7
II. Results of the investigation 23
Appendix 43