It's a small box for display module. Designed as temeprature probe with precission frame around the display area of the module. Has a small holes for two 3mm cables. (power and probe DS18..) It's designed for print from PETG filament. Minimalistics design without any extra things for mount. You need only for four 2mm screws and display module. Internal space is degined for use i2c modue on the diplay and arduino ProMini