What is the typical size of Zingraff opera glasses?

Zingraff opera glasses are compact, with most measuring between 8 and 10 centimetres in width. The barrels are short, often around 5 to 7 centimetres in length. This size makes them easy to hold in one hand. Weight usually ranges from 200 to 300 grams, depending on materials. Smaller models were designed for portability, fitting into evening bags. Larger versions offered slightly wider lenses for better viewing. The compact design reflects their intended use in indoor settings. Compared with modern binoculars, they are much smaller and lighter. This size contributed to their popularity during the 19th century, as people valued convenience during social events.