This machine is a sophisticated commercial coffee roaster designed for specialty roasteries and coffee shops, produced by the renowned American company Mill City Roasters. Based on the design, control panel, and dimensions, it represents a model intended for small batches or laboratory experiments (such as the MCR-1 or MCR-2 model with a capacity of 1 to 2 kilograms). Key components visible in the image: * **Hopper:** The upper silver cone made of stainless steel for placing green coffee beans before they are dropped into the roasting drum. * **Pressure Gauge:** The circular gauge on the left for reading and monitoring gas or air pressure to ensure flame stability. * **Control Panel:** Features digital displays for reading bean temperature (BT) and ambient air temperature (ET), along with illuminated colored buttons for power, roaster operation, cooling fan, and cooling arms. * **Cooling Tray:** The circular tray on the right equipped with mechanical arms for agitating roasted beans immediately after they exit, to rapidly cool them and halt the roasting process within the bean. * **Trier:** The wooden and metal handle extended for drawing small samples of coffee during roasting to visually monitor the development of color and aroma.