Sextant
George C. Harris House
Tous droits réservés.
| Nom de l'objet : | Sextant |
| Type de l'objet : | Marine |
| Catégorie de l'objet : | Tools & Equipment for Science & Technology |
| Sous-catégorie de l'objet : | Surveying & Navigational Tools & Equipment |
| Matériaux : | Metal, Iron, Copper Wood Glass |
| Technique de fabrication : | Carved Screwed Bolted |
| Numéro d'accession : | No Acquisition # 1 |
| Fabricant : | Henry Hughes & Son |
| Pays d'origine : | England |
| Municipalité d'utilisation : | Grand Bank |
| Province d'utilisation : | Newfoundland |
| Pays d'utilisation : | Canada |
| Période : | 19th Century |
| Description : | The sextant is housed in a varnished wooden box which has a locking mechanism and key on the front. The lid of the box is held to the body via a brass hinge. The top of the box has a brass handle for carrying the unit. The sextant is made up of a number of brass components. The index arm is responsible for moving the index mirror. The indicator points at the arc which shows the measurement. The body of the sextant is the key that ties all of the other components together. There are 6 shade glasses, with 3 located above the horizon mirror and 3 below it. |
| Fonctions : | The sextant is an instrument that is used to aid in navigation. The sextant is generally used to measure the altitude of a celestial object above the horizon. The angle, and the time when it was measured can be used to determine a position line on a nautical chart. Held horizontally the sextant can be used to measure the angle between any two objects, allowing for a calculation of position on a chart. |
| Hauteur : | 16 |
| Longueur : | 27 |
| Largeur : | 28 |
| Unité de mesure linéaire : | cm |
| Nombre d'objets : | 1 |
| Nombre de parties composantes : | 4 |
| Nom des parties composantes : | Telescope, 3 unidentified components |
| Étiquette ou poinçon : | There is a paper label stuck on the lid of the wooden carrying case of the sextant. The label reads:"HUSUN," "Sextant No.43688 named Henry Hughes & Son Ltd. of 6" radius & reading to 10" has been examined and found satisfactory." It then lists the corrections that should be made and the telescope data. There is also a label that reads how to care for the sextant in order for it to maintain its' accuracy. |
| Établissement : | George C. Harris House |
| Ville de l'établissement : | Grand Bank |
| Province de l'établissement : | Newfoundland & Labrador |
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