Evolution of Mines Surveying Instruments Comprising the Original Paper of M
Evolution of Mines Surveying Instruments Comprising the Original Paper of M
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In our eReader you can find the full English version of the book. Read Evolution of Mines Surveying Instruments Comprising the Original Paper of M 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 Evolution of Mines Surveying Instruments Comprising the Original Paper of M
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2565632 Log. Of the distance required, 2. 7336845 Distance required, u >>. !'. . ;! ;v/^ . . 541. 60725 The average of several measurements of the angle should be employed. When the distant point is in an elevated place, the length of the line to be determined would be that of the hy- pothenuse of a vertical right-angled triangle, and should be re- duced to the horizontal by the ordinary rule.
Cook & Sons, of York, introduced some years since a new model of surveying-instrument of the transit-t...ype, the standards or Y's of which, and the vernier circle, are cast in a single piece, insuring great stability and freedom from vibration. The lower circle has a square outer edge, similar to a thin cylinder, and the divisions are marked upon the upper portion of the square edge, so that the vernier, being also square-edged, fits so nicely that the division line between vernier and cir- cle is almost imperceptible. The vertical circle is divided in a similar form. The divisions are read either by direct sight through horizontal microscopes or by perpendicular sight through prismatic microscopes.
What to read after Evolution of Mines Surveying Instruments Comprising the Original Paper of M?
You can find similar books in the "Read Also" column, or choose other free books by Dumbar D Scott to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
2565632 Log. Of the distance required, 2. 7336845 Distance required, u >>. !'. . ;! ;v/^ . . 541. 60725 The average of several measurements of the angle should be employed. When the distant point is in an elevated place, the length of the line to be determined would be that of the hy- pothenuse of a vertical right-angled triangle, and should be re- duced to the horizontal by the ordinary rule.
Cook & Sons, of York, introduced some years since a new model of surveying-instrument of the transit-t...ype, the standards or Y's of which, and the vernier circle, are cast in a single piece, insuring great stability and freedom from vibration. The lower circle has a square outer edge, similar to a thin cylinder, and the divisions are marked upon the upper portion of the square edge, so that the vernier, being also square-edged, fits so nicely that the division line between vernier and cir- cle is almost imperceptible. The vertical circle is divided in a similar form. The divisions are read either by direct sight through horizontal microscopes or by perpendicular sight through prismatic microscopes.
What to read after Evolution of Mines Surveying Instruments Comprising the Original Paper of M?
You can find similar books in the "Read Also" column, or choose other free books by Dumbar D Scott to read onlineMoreLess
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