Category:Mirrors made of speculum metal

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Subcategories

This category has only the following subcategory.

T

Telescopes with speculum-metal mirrors (3 C, 1 F)

Media in category "Mirrors made of speculum metal"

The following 2 files are in this category, out of 2 total.

40-foot telescope mirror.jpg 2,602 × 2,706; 2.14 MB
Original 40-foot telescope mirror, Science Museum, London.jpg 2,592 × 3,888; 2.05 MB

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