The Ordnance Society has recently embarked upon a series of artillery surveys, which have links to photographs of the actual guns. The surveys are freely available for download, together with Input/Update forms.
The first, a worldwide survey of British 6-in guns has grown rapidly to nearly 240 guns and has attracted input and updates from many countries.
The second survey, launched at the end of March 2021, is a National Artillery Survey of the UK, including foreign guns, and has a more comprehensive range of data. The initial database of nearly 120 guns was built up by a small number of Ordnance Society members, and ranges from the 18-in Howitzer at Fort Nelson, Portsmouth, to 37mm Pom-Poms.
Other surveys are also planned.