Retired with a work background in the petrochemicals industry.
An enthusiast level interest for over 40 years in optical microscopy and the associated history of science. Particular interest in repeating classic experiments in the subject. Help run a website for microscopy hobbyists.
Also an enthusiast level interest in aspects of the history of mathematical tables and slide rules. Have a modest collection of slide rules.
Collect stamps on narrow topics related to the above interests and exploring their design themes.