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To offset my previous eastern bloc post, here's a souvenir from GDR, or DDR, as you were. Original Richter math compass, 1983/4 thereabouts. Not inherited, bought for school. Some spare parts included. :
Mechanical drawing compass with accessories made by Richter Original in a box with red velvet on desk or table, close-up, indoors, studio still life Stock Photo - Alamy
GRANDE BOITE à compas Richter et Cie. Long. 40 cm | Drouot.com