Fig. 3From: The non-destructive investigation of a late antique knob bow fibula (Bügelknopffibel) from Kaiseraugst/CH using Muon Induced X-ray Emission (MIXE)Detailed photos of the needle (top) and the spiral (bottom) of the fibula. The photos were taken with a Leica DVM6 stereomicroscope. The arrows indicate the manufacturing traces. The corrosion products of the iron (from the axis-pin) are clearly visible on the spiralBack to article page