Bresser Microscope Junior 20x with Incident Light

A colour is a visual attribute that describes the hue or shade of an object or surface. It can be a single dominant colour, a combination of colours, or a range such as "Black, White". The value may be expressed in common names (e.g., Black, Silver) or descriptive terms (e.g., One Colour, Assorted).

The overall linear dimension of a product measured along one axis, expressed with a standard unit such as meters, centimeters or inches. It represents the full size from end to end and is used to compare physical dimensions across similar items.

The type of optical or digital device used for viewing, such as binoculars, monoculars, trinoculars, or devices with a built‑in screen. It indicates the general form factor and whether the device provides multiple lenses or a single lens for observation.