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Collection of lodestones, a horseshoe iron magnet and two keepers, English or French, 17th-18th century...

IMAGE number
MFR135754
Image title
Collection of lodestones, a horseshoe iron magnet and two keepers, English or French, 17th-18th century (brass cased magnetite)
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Location
Private Collection
Medium
brass cased magnetite
Date
C18th AD
Image description

material from which ships' compasses were originally made; used for remagnetising compass needles; power increased when the pole pieces are capped with an iron armature called a 'keeper';

Photo credit
Bridgeman Images
Image keywords
navigational / science / magnet / mineral ore / magnetic / guiding / compass / guide / oxide of iron / instrument / navigation
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No Additional Copyright
Largest available format 489 × 600 px 0 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB]
Large 489 × 600 px 41 × 51 mm 32 KB
Medium 489 × 600 px 41 × 51 mm 144 KB

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