One of four photographs showing two views of the filar micrometer for the 40-inch Yerkes refracting telescope
- maker:
- Warner & Swasey Co.
One of four photographs mounted in glazed museum frame showing two views of the filar micrometer for the 40-inch Yerkes refracting telescope, at Williams Bay; Wisconsin; USA.
Details
- Category:
- Astronomy
- Object Number:
- 1915-585/4
- Materials:
- paper (fibre product), cardboard, wood (unidentified), glass and complete
- type:
- photograph
- credit:
- Warner & Swasey Co
