. Electronic apparatus for biological research . Armature of stalloy or mumetal \ 1 Tension wire ~ Moving core of magnetic material mm stalloy diaphragm Coil Laminated core

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Size: 2354px × 2124px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity