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Protractor, Brass conveyor or protractor in a wooden box. The radius of the protractor is 102 mm. The center of the arc is indicated with an iron needle and the instrument has
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PME RND054 Runde Backform aus eloxiertem Aluminium, 127 x 102 mm, 12.7 cm : Amazon.de: Küche, Haushalt & Wohnen
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4" (102 mm) W x 150' (4,572 cm) L 60 Micron A/O Microfinishing Film DynaCut Roll 92768 | Ward-Kennedy
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