Drawing of an Improvement in Compasses - NARA - 1126985.jpg
en
Drawing of an Improvement in Compasses NARA 1126985, US National Archives series: Utility Patent Drawings, Images from the National Archives and Records Administration, US National Archives location: other, Drawing of an Improvement in Compasses
commons
ja
コンパスの改善図 NARA 1126985、米国国立公文書館シリーズ: 実用特許図面、米国国立公文書館所蔵画像: その他、コンパスの改善図面
commons_translated
improvable improvement augmentation