Optical tools are a particularly efficient way to look at difficult-to-reach areas or carry out precision work. Hand-held mirrors with telescopic handles, for example, make it easier to inspect vehicles, avoiding complicated and time-consuming dismantling. Different magnifying glasses are used in production and checking of filigree work, in electronics and other industries. Microscopes can be used for greater magnification. They offer not just higher precision, but also a number of additional features such as a recording function, if they are connected to the appropriate devices. Endoscopes with cameras are used for inaccessible areas such as niches, holes and pipes. It is possible to expand the functions of some models, and they are often compatible with smart devices.