DescriptionSector Ruler (PSF).png English: Sector (Instrument) aka proportional compass Date 20 July 2019 Source Archives of Pearson Scott Foresman, donated...
(Reusing this file) Other versions Sedan chair (PSF).png Sector (PSF).png Sedges (PSF).png Sector Ruler (PSF).png Seeds (PSF).png Sea Snake (PSF).png...
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