Statements (12)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:astronomer | 
| gptkbp:aperture | 6 inches | 
| gptkbp:historicalSignificance | used in late 19th and early 20th centuries | 
| gptkbp:manufacturer | gptkb:Alvan_Clark_&_Sons | 
| gptkbp:notableExample | gptkb:Lowell_Observatory_6-inch_Clark_refractor gptkb:United_States_Naval_Observatory_6-inch_Clark_refractor | 
| gptkbp:type | gptkb:astronomer | 
| gptkbp:used_in | various observatories | 
| gptkbp:usedFor | gptkb:astronomer | 
| gptkbp:bfsParent | gptkb:Yerkes_Observatory | 
| gptkbp:bfsLayer | 5 | 
| https://www.w3.org/2000/01/rdf-schema#label | 6-inch Clark refractor |