These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
Amgueddfa Cymru – Museum Wales
Watson konimeter no. 92869. Double barrel on circular base with glass disc insert graded into 30 sections. In leather carrying case lined in blue velvet with two replacement glass discs in metal cases and spare sight cover(?).
A later British model of the Zeiss Konimeter which incorporates a microscope to facilitate the visual examination and counting of the dust particles in the spot sample.
