Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Sibley or search for Sibley in all documents.

Your search returned 6 results in 2 document sections:

Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
ends are about three inches high, and marked at a certain level; the tube is charged with quicksilver, so as to stand at the marked point in the tube-ends. Floats resting on the surface of the mercury have stems which pass outside and support sights through which objects are viewed. The instrument is supported on a tripod. Gravatt's surveyor's level (c) consists of a telescope provided with spirit-levels. It is furnished with screws for minute adjustment, and is mounted on a tripod. Sibley's level (d) is made of cast-iron, and is a cheap form of the instrument, possessing sufficient accuracy for common uses. At one end it is provided with a sight having a small aperture with a short tube attached. At the opposite end of the level is a ring with cross wires, so adjusted that the center of the sight aperture and the intersection of the wires are level when the bubble at the center indicates that the instrument is level. The level stands on a circular graduated table, from
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
, 1860. 35,191WinchellMay 6, 1862. 38,447GroteMay 5, 1863. 42,110RedmondMar. 29, 1864. 42,117SibleyMar. 29, 1864. 48,248SibleyJune 13, 1864. 54,926LeavensMay 22, 1866. 58,245Fuller, H. W.Sept. SibleyJune 13, 1864. 54,926LeavensMay 22, 1866. 58,245Fuller, H. W.Sept. 25, 1866. 59,659RodierNov. 13, 1866. 60,682BruenJan. 1, 1867. 62,050McCurdyFeb. 12, 1867. 63,132ArmstrongMar. 26, 1867. 68,839BruenSept. 17, 1867. 89,693TittmanApr. 20, 1869. 97,935LathropDec. oydDec. 27, 1870. 6. Needles (continued). No.Name.Date. 112,576FraryMar. 14, 1871. 112,744SibleyMar. 14, 1871. 112,980StrainMar. 21, 1871. 113,010BlanchardMar. 28, 1871. (Reissue.)4,663W862. 36,616HumphreyOct. 7, 1862. 39,658JewettAug. 25, 1863. 46,133ParhamJan. 31, 1865. 49,837SibleySept. 5, 1865. 85,891ReedJan. 12, 1869. 86,591ReedFeb. 2, 1869. 90,045HarrounMay 11, 1869. 24 105,852SaffordJuly 26, 1870. 106,151GoodrichAug. 9, 1870. 106,789DavisAug. 30, 1870. 107,109SibleySept. 6, 1870. 110,045JensonDec. 13, 1870. (Reissue.)4,196BoltonDec. 13, 1870. 112,050Kell