Subject ASC0002vco

The gardener's magazine and register of rural & domestic improvement.
new ser., v. 6 (1840), Page 192 (1840)
Smithsonian Libraries
BHL Page 32383777

Keywords

Light ray mirror angle reflection inclination Measurement observer eye height instrument Hypsometer tree height sang's hypsometer hypsometer measuring trees or buildings measuring tree mirrors tree measuring device measurement high-measurement

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