Photographic Surveying Including the Elements of Descriptive Geometry And Persp
Photographic Surveying Including the Elements of Descriptive Geometry And Persp
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In our eReader you can find the full English version of the book. Read Photographic Surveying Including the Elements of Descriptive Geometry And Persp Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Photographic Surveying Including the Elements of Descriptive Geometry And Persp
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For distances of 500, 400, 300, 200 and 100 metres and with a lens of 212 millimetres focus, the displacement of the focal plane should only be 0'09, 0*11, 0'15, 0-22 and 045 millimetres respectively. For shorter distances, the lens has a motion in the direction of the axis to the extent of two millimetres. This brings in focus objects situated at 23 metres from the instrument. Lii the helicoidal slit cut in the outer tube of the lens is a small block t screwed to the inner tube. Both tubes are... clamped together by the screw shown at the end of the slit. Unscrewing it and turning the inner tube from right to left brings the lens out. The nclination of the slit to the axis is such, as to correspond to a motion SURVEYING CAMERAS.
133 of two millimetres in the direction of the axis when the block t travels from one end of the slit to the other. These two extreme positions are indicated by the graduations and 2 on the outer tube opposite the index mark on t. The interval is divided into twenty parts, so that the displacement of the lens is read directly to O'l millimetre.
What to read after Photographic Surveying Including the Elements of Descriptive Geometry And Persp?
You can find similar books in the "Read Also" column, or choose other free books by Edouard Gaston Daniel Deville to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
For distances of 500, 400, 300, 200 and 100 metres and with a lens of 212 millimetres focus, the displacement of the focal plane should only be 0'09, 0*11, 0'15, 0-22 and 045 millimetres respectively. For shorter distances, the lens has a motion in the direction of the axis to the extent of two millimetres. This brings in focus objects situated at 23 metres from the instrument. Lii the helicoidal slit cut in the outer tube of the lens is a small block t screwed to the inner tube. Both tubes are... clamped together by the screw shown at the end of the slit. Unscrewing it and turning the inner tube from right to left brings the lens out. The nclination of the slit to the axis is such, as to correspond to a motion SURVEYING CAMERAS.
133 of two millimetres in the direction of the axis when the block t travels from one end of the slit to the other. These two extreme positions are indicated by the graduations and 2 on the outer tube opposite the index mark on t. The interval is divided into twenty parts, so that the displacement of the lens is read directly to O'l millimetre.
What to read after Photographic Surveying Including the Elements of Descriptive Geometry And Persp?
You can find similar books in the "Read Also" column, or choose other free books by Edouard Gaston Daniel Deville to read onlineMoreLess
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