Which famous scientific instrument brand was endorsed by Anton van Leeuwenhoek in the 17th century, helping to establish the field of microbiology?

Before scientific instruments became standardized laboratory equipment, they were often associated with specific innovators and brands. One particular instrument transformed how we understand the microscopic world and launched a scientific revolution. Test your knowledge about how product branding intersected with scientific discovery in this pivotal moment of scientific history.

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Leeuwenhoek Microscopium - the first commercial microscope brand endorsed by its inventor
None - van Leeuwenhoek made his own microscopes and refused to sell or endorse any commercial brand
Royal Delft Optics - the Dutch company that manufactured van Leeuwenhoek's designs under royal patent
Philosophia Naturalis - the brand name given to microscopes approved by the Royal Society of London