 | George Adams - 1813 - 648 Seiten
...other. Under the joint is an ivory castor to support this end of the instrument. The two smaller rules are fixed by pivots at E and H, near the middle of the larger rules, and are also joined together at their other end, G. The fulcrum, or support K, is a leaden... | |
 | 1823 - 872 Seiten
...other. Under the joint is an ivory castor, to support this end of the instrument. The two smaller rules are fixed by pivots at E and H, near the middle of the larger rules, and are also joined together at their other end, G. " By the construction of this instrument,... | |
 | Anthony Nesbit - 1847 - 492 Seiten
...other. Under the joint is an ivory castor, to support this end of the instrument. The two smaller rulers are fixed by pivots at E and H, near the middle of the larger rulers ; and are also joined together at their other end, G. Plate V. By the construction of... | |
 | John Ainslie - 1849 - 586 Seiten
...four feet in length ; it consists of four flat bars, about half an inch broad, and about one-eighth of an inch thick — two long, and two short. The...at C by a double pivot. By the construction of the pantagraph, the four bars always form a parallelogram or rhombus. There is a slider on one of the larger... | |
 | Henry S. Merrett - 1863 - 428 Seiten
...the other ; under the joint is an ivory wheel, to support this end of the instrument. The two shorter bars are fixed by pivots at E and H, near the middle of the longer bars, and are also joined together in a similar manner at the other end, G ; ivory wheels being also fixed under each joint, marked a.... | |
 | Henry S. Merrett - 1863 - 476 Seiten
...the other ; under the joint is an ivory wheel, to support this end of the instrument. The two shorter bars are fixed by pivots at E and H, near the middle of the longer bars, and are also joined together in a similar manner at the other end, G ; ivory wheels being also fixed under each joint, marked a.... | |
 | Anthony Nesbit - 1870 - 578 Seiten
...other. Under the joint is an ivory castor, to support this end of the instrument. The two smaller rulers are fixed by pivots at E and H near the middle of the larger rulers, and are also joined togther at their other end G. By the construction of this instrument,... | |
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A, by a double pivot, which is fixed to one of the rulers ; and works in two small holes placed at the end of the other. Under the joint is an ivory castor, to support this end of the instrument. The two smaller... 