 | 1860 - 982 pages
...to about one degree. It is also furnished with a position-circle. Its character is essentially th« same as that of the parallel-wire micrometer ; but...lenses, mounted in separate frames, which slide in a grove, and can be separated to the required distance. A frame carrying two parallel spider-lines, each... | |
 | 1861 - 448 pages
...measuring with accuracy any distance up to about one degree. It ia also furnished with a positioitcircle. Its character is essentially the same as that of the...spider-lines, each mounted separately with its own micrometer screw, slides in a dovetailed groove in front of the eye-pieces; and, by a free motion in... | |
 | 1861 - 450 pages
...with a position-circle. Its character is essentially the same as that of the parallel-wire mierometer; but it has some peculiarities, not, it is believed,...spider-lines, each mounted separately with its own mierometer serew, slides in a dovetailed groove in front of the eye-pieces ; and, by a free motion... | |
 | 1861 - 448 pages
...furnished with two eye-pieces, composed of small single lenses, mounted in separate frames, whicli slide in a groove, and can be separated to the required...spider-lines, each mounted separately with its own micrometer screw, slides in a dovetailed groove in front of the eye-pieces; and, by a free motion in... | |
 | 1861 - 448 pages
...about one degree. It is also furnished with a position-circle. Its character is essentially the game as that of the parallel-wire micrometer; but it has...spider-lines, each mounted separately with its own micrometer screw, slides in a dovetailed groove in front of the eye-pieces ; and, by a free motion... | |
 | 1888 - 924 pages
...(Monthly Notice» SAS, vol. xix. ). It is capable of measuring angles up to about one degree. It is "furnished with 'two eye-pieces, composed of small...the required distance. A frame carrying two parallel spider lines, each mounted separately with its own micrometer screw, slides in a dovetailed groove... | |
 | 1907 - 936 pages
...It is capable of measuring angles up to about one degree. It is " furnished with two e„ e-pieces, composed of small single lenses, mounted in separate...groove and can be separated to the required distance. À frame carrying two parallel spider lines, each mounted separately with its own micrometer screw,... | |
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Its character is essentially the game as that of the parallel-wire micrometer; but it has some peculiarities, not, it is believed, previously introduced, and on which its wide range depends. The most remarkable of these peculiarities consists in its being... 