Vernier Compass with Telescope
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"unit_code": "NMAH", "title_sort": "VERNIER COMPASS WITH TELESCOPE", "guid": "http://n2t.net/ark:/65665/ng49ca746a5-9bc8-704b-e053-15f76fa0b4fa", "title": {"label": "Title", "content": "Vernier Compass with Telescope"}, "metadata_usage": {"access": "CC0"}, "data_source": "National Museum of American History"}, "indexedStructured": {"geoLocation": [{"Other": {"type": "Place", "content": "United States"}}, {"Other": {"type": "Place", "content": "New York"}}, {"Other": {"type": "Place", "content": "Troy"}}, {"points": {"point": {"latitude": {"type": "decimal", "content": "42.7167"}, "longitude": {"type": "decimal", "content": "-73.6833"}}}}], "object_type": ["Patents", "compass (pocket with telescope)", "Models"], "name": ["W. & L. E. Gurley"], "topic": ["Geodesy", "Surveying"], "place": ["New York", "United States", "Troy"], "online_media_type": ["Images"]}, "freetext": {"setName": [{"label": "See more items in", "content": "Medicine and Science: Physical Sciences"}, {"label": "See more items in", "content": "Surveying and Geodesy"}, {"label": "See more items in", "content": "Measuring & Mapping"}], "identifier": [{"label": "ID Number", "content": "PH.312755.01"}, {"label": "accession number", "content": "165452"}, {"label": "catalog number", "content": "312755.01"}], "notes": [{"label": "Description", "content": "The inscription on this compass reads \"W. & L. E. Gurley, Troy, N. Y.\" Gurley described this as a \"Pocket Railroad Compass with Telescope.\" The form, with the folding sights offset so that the telescope is aligned with the north south line, was made between 1887 and 1920. The rim is graduated to 30 minutes, and numbered in quadrants from north and south. The outside of the box has a variation arc that extends \u00c2\u00b1 35 degrees, and that reads by folded vernier to 5 minutes. New, it cost $58."}, {"label": "Description", "content": "Ref: W. & L. E. Gurley, <i>A Manual of the Principal Instruments Used in American Engineering and Surveying</i> (Troy, N.Y., 1904), p. 140."}, {"label": "Description", "content": "William H. Skerritt, <i>Catalog of the Charles E. Smart Collection of Antique Surveying Instruments</i> (Troy, N.Y., 1996), pp. 36-39."}, {"label": "Location", "content": "Currently not on view"}], "creditLine": [{"label": "Credit Line", "content": "Robert V. R. Reynolds"}], "name": [{"label": "maker", "content": "W. & L. E. Gurley"}], "publisher": [{"label": "Related Publication", "content": "W. & L. E. Gurley. Manual of the Prinicipal Instruments Used in American Engineering and Surveying; 37th Edition"}, {"label": "Related Publication", "content": "Skerritt, William H.. Catalog of the Charles E. Smart Collection of Antique Surveying Instruments"}], "place": [{"label": "place made", "content": "United States: New York, Troy"}], "physicalDescription": [{"label": "Measurements", "content": "overall: 5 3/4 in; 14.605 cm"}, {"label": "Measurements", "content": "needle: 4 1/2 in; 11.43 cm"}, {"label": "Measurements", "content": "telescope: 8 3/4 in; 22.225 cm"}, {"label": "Measurements", "content": "vertical circle: 3 1/2 in; 8.89 cm"}, {"label": "Measurements", "content": "overall in case: 5 in x 10 3/8 in x 7 1/8 in; 12.7 cm x 26.3525 cm x 18.0975 cm"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "compass (pocket with telescope)"}, {"label": "Object Type", "content": "Patent Model"}]}}, "url": "edanmdm:nmah_761556", "hash": "b859baf10c843f6ee26da5eaf942196b97ac97c2", "docSignature": "a87bf25f0f2b30afa9d3aa99ebdecf14", "timestamp": 1663782597, "lastTimeUpdated": 1655973882, "title": "Vernier Compass with Telescope"}