Please note that we have temporarily paused our iconic Underground Tours until April 2025, to install a brand new winding engine. The Museum remains open with a brand-new Time Tunnel experience now bookable.
The Ashworth HeppleWhite-gray lamp was designed specially for gas testing by James Ashworth in 1887. Specialist gas-testing lamps gave much more precise readings of how much methane gas was in the air.
They were manufactured by Davis of Derby from 1890s, appearing in their 1893 catalogue.
