 | 1885 - 520 páginas
...rule consults of a cylinder (<t"\ that can be moved up and down upon, and turned round, an axis (/), which is held by a handle (e). Upon this cylinder is wound in a spiraf a single logarithmic scale. Fixed to the handle is an index (&). Two other indices (c) and ,<•... | |
 | 1881 - 214 páginas
...required in the office of the Actuary, Engineer and Architect. The rule consists of a cylinder (d) that can be moved up and down upon, and turned round,...logarithmic scale. Fixed to the handle is an index (b). Two other indices (c) and (a), whose distance apart is the axial length of the complete spiral,... | |
 | T K. Stubbins - 1881 - 100 páginas
...rule consists of a cylinder (d) that can be moved up and down upon, and turned round, an axis (/), which is held by a handle (e). Upon this cylinder...logarithmic scale. Fixed to the handle is an index (b). Two other indices (c) and (a), whose distance apart is the axial length of the complete spiral,... | |
 | Engineers' Society of Western Pennsylvania, Pittsburgh - 1889 - 386 páginas
...up and down and revolved about a second fixed cylinder to which a handle is attached. Upon the outer cylinder is wound in a spiral a single logarithmic scale; fixed to the handle is an index. A third cylinder slides and revolves within the second, to which is attached two other indices whose... | |
 | Alexander Wynter Blyth - 1890 - 762 páginas
...consists of a cylinder jacket (if) that can be moved up and down upon, and turned round, an axis (/), which is held by a handle (e). Upon this cylinder...logarithmic scale. Fixed to the handle is an index (li) which for distinction may be called " the indicator," for the answer to a sum is always read from... | |
 | William Ford Stanley - 1900 - 388 páginas
...cylinder that can be moved up and down upon, and turned round, an axis, which is held by a handle. Upon this cylinder is wound in a spiral a single logarithmic scale. Fixed to the handle is an index. Two other indices, whose distance apart is the axial length of the complete spiral, are fixed to the... | |
 | Arnold Lupton - 1902 - 494 páginas
...The rule consists t>fa cylinder, d , that can be moved up and down upon, and turned round, an axis,/, which is held by a handle, e. Upon this cylinder is...logarithmic scale. Fixed to the handle is an index, b. Two other indices, •• and a, whose distance apart is the axial length of the complete spiral,... | |
 | Eugene Dietzgen Co - 1911 - 570 páginas
...cylinder that can be moved up and down upon, and turned round, an axis, the latter being held by a handle. Upon this cylinder is wound in a spiral a single logarithmic scale. Fixed to the handle is an index. Two other indices, whose distance apart is the axial length of the complete spiral, are fixed to an... | |
 | 1918 - 2826 páginas
...down •éi (il. Two other indices (c and a), whose distance apart is the axial length of - iff ii wound in a spiral a single logarithmic scale. Fixed to the handle ie an ; • cK&piete spin!, are fixed to the cylinder g. This cylinder slides in / like a *^tup* tobe,... | |
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Two other indices (c) and (a), whose distance apart is the axial length of the complete spiral, are fixed to the cylinder (g). This cylinder slides in (/) like a telescope tube, and thus enables the operator to place these indices in any required position... 