Thank you for viewing. This is an analog hygrometer for a dry box, approximately 7cm in diameter, made by Toyo Living. - Brand: TOYO LIVING - Type: Hygrometer - Measurement Range: 0% - 100% - Display Type: Analog - Mounting: Wall-mountable - Diameter: Approximately 6.9cm (front metal part) - Diameter: Approximately 6.3cm (rear white frame part) It will be shipped via Yu-Packet Post Mini. Since this is a hygrometer for a dry box, it is listed in the "Camera Storage" category. Please note that this listing is for the hygrometer only. If you have any questions, please feel free to ask.