Diana Mayer & Grammelspacher is an air gun manufacturer founded and based in Rastatt, Germany. The company, named after Diana, the mythological goddess of the hunt, is best known for producing quality air rifles.
Mayer & Grammelspacher GmbH was founded in Rastatt in 1890 by 24-year old toolmaker Jakob Mayer and financier Josef Grammelspacher, initially focusing on household metal goods. Two years later they introduced their first air gun, a pistol, based on the Haviland & Gunn model of 1872. The first rifle, a break barrel design, followed in 1895. Early products were marked “MGR” (for Mayer, Grammelspacher and Rastatt) before the introduction of the now-famous “Diana” brand name. In 1901 Grammelspacher left the company for reasons unknown, whilst Mayer was awarded his first patent.