![](https://coimages.sciencemuseumgroup.org.uk/434/905/large_thumbnail_smg00155379.jpg)
Safety lamp
Safety lamp, Body no.9B, Mueseler type, from the Ellis Lever Competition and the Royal Commission on Accidents in Mines 1879-86, 1883
Safety lamp, Body no.9B, Mueseler type, from the Ellis Lever Competition and the Royal Commission on Accidents in Mines 1879-86, 1883