 The instrument may be turned in declination with the finger, and round the polar axes with still less force. The most perfect motion round the polar axes is produced by means of clock-work, which is the principal feature of this instrument, and the greatest...  American Mechanics' Magazine - Seite 731825Vollansicht - Über dieses Buch
 | 1825 - 546 Seiten
...the most perfect equilibrium in every direction, and providing against all friction. The declination circle is directed from 10* to 10', but, by means...the mechanism being as simple as it is ingenious. A weight, attached to a projection connected with an endless screw, overcomes the friction of the machine.... | |
 | Perry Fairfax Nursey - 1825 - 476 Seiten
...direction, and providing against all friction. The declination circle is directed from Iff to 1 0', but, by means of the vermice, may be read off to 5"....the mechanism being as simple as it is ingenious. A weight, attached to a projection connected with an endless screw, overcomes the friction of the machine.... | |
 | 1825 - 484 Seiten
...in every direction, and providing against all friction. The declination circle is directed from KX to 10', but, by means of the vermice, may be read...The instrument may be turned in declination with the nnger, and round the polar axes with still less force. The most perfect motion round the polar axes... | |
 | William Newton - 1825 - 442 Seiten
...against all friction. The declination circle is divided from 10' to 10', but by means of the Vernier may be read off to 5". The instrument may be turned...in declination with the finger, and round the polar axis with still less force. The most perfect motion round the polar axis is produced by means of clock-work,... | |
 | William Newton, Charles Frederick Partington - 1825 - 446 Seiten
...against all friction. The declination circle is divided from 10' to 10', but by means of the Vernier may be read off to 5". The instrument may be turned...in declination with the finger, and round the polar axis with still less force. The most perfect motion round the polar axis is produced by means of clock-work,... | |
 | 1825 - 506 Seiten
...friction. The declination circle is divided from 10' to 10', but by means of the Vernier may be read ofT to 5". The instrument may be turned in declination with the finger, and round the polar axis with still less force. The most perfect motion round the polar axis is produced by means of clock-work,... | |
 | 1825 - 506 Seiten
...against all friction. The declination circle is divided from 10' to 10', but by means of the Vernier may be read off to 5". The instrument may be turned in declination with the ringer, and round the polar axis with still less force. The most perfect motion round the polar axis... | |
 | 1825 - 446 Seiten
...against all friction. The declination circle is divided from 10' to 10', but by means »'l IKoe Vernier may be read off to 5". The instrument may be turned in declinatiou with the finger, and round the polar axis with still less force. . ,, .,. , • i , . The... | |
 | 1826 - 460 Seiten
...being thus set up, and the counterpoise properly adjusted, is perfectly balanced in every situation. It may be turned in declination with the finger, and round the polar axis with still less force, a weight of three pounds being fixed at some distance from the eye-end,... | |
 | 1826 - 418 Seiten
....being thus set up, and the counterpoise properly adjusted, is perfectly balanced in every situation. It may be turned in declination with the finger, and round the polar axis with still less force, a weight of three pounds being fixed at some distance from the eye-end,... | |
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