f116v squiggle from the multispectral images

[oshfdk]

Speaking about the width of the strokes, here's a comparison of the squiggle with the symbol from the lower right corner of f57v, roughly to scale (I used the sizes of the respective folios to match the image from the MSI set and the visible light TIFF). I'd say the width of the strokes is approximately the same. What implement was likely used for the symbol from f57v?