This high-precision ruler is designed to help identify the size of samples found in the field. It is ideal for geology, paleontology, and archaeology, or any small measurements conducted indoors or outdoors. Designed with PLA material, it avoids the risk of breaking or bending like ordinary cardboard business cards, and it also resists moisture over long periods of time. It is a highly reliable and accurate tool that can be carried in a wallet. Additional details, such as a museum's name or a company's name, can be added as needed.

It is recommended to use PLA filament

The temperature of the heating bed is 60 degrees Celsius

The nozzle temperature is 250 degrees Celsius.