Measuring Instruments and Techniques. C017 / 3475
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Measuring Instruments and Techniques. C017 / 3475
Plate from 18th century encyclopedia showing illustrations of various measuring instruments and techniques. Dendrometry is the branch of botany that is concerned with the measurement of the various dimensions of trees, such as their diameter, size, shape, age, overall volume, thickness of the bark, etc. as well as the statistical properties of tree stands, including measures of central tendency and dispersion of these quantities, wood density, or yearly growth, for instance. In measurement, the Coggeshall slide rule, was a slide rule designed by Henry Coggeshall in 1677 to facilitate measuring the dimensions, superficies, and solidity of timber. Also shown are illustrations of; a plotting scale, protractor, and quadrant
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9272609
© DAVID PARKER/SCIENCE PHOTO LIBRARY
Bark Diagram Diameter Encyclopedia Measurement Protractor Quadrant Statistics Theodolite Timber Trees Wood Coggeshall Sector Slide Rule
EDITORS COMMENTS
This print from the Science Photo Library showcases an intriguing plate from an 18th-century encyclopedia. The plate beautifully illustrates a wide array of measuring instruments and techniques, offering a glimpse into the world of precision measurement during that era. One prominent aspect highlighted in this image is dendrometry, the branch of botany dedicated to measuring various dimensions of trees. From diameter and size to shape and age, dendrometry encompasses all aspects related to tree measurements. Additionally, it explores statistical properties such as central tendency and dispersion within tree stands, wood density, yearly growth rates, and even the thickness of bark. The Coggeshall slide rule takes center stage in this illustration as a remarkable tool designed by Henry Coggeshall in 1677 specifically for measuring timber's dimensions, superficies (surface area), and solidity. Its invention revolutionized the accuracy with which these measurements could be obtained. Accompanying this fascinating instrument are depictions of other essential tools used for measurement purposes. A plotting scale aids in creating precise graphs or diagrams while a protractor assists with angle measurements. Lastly, a quadrant provides further assistance in determining angles or celestial observations. This print serves as both an educational resource and a testament to humanity's continuous pursuit of knowledge through advancements in scientific instrumentation throughout history.
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