Monometr thermometer with arrow Free 3D model

Hello everyone, I'm exhibiting my first model, in the style of mini hard surface modeling)I would be very glad to have your comments on it.I did it in a blender, I could not correctly transfer the materials to fbx, most likely it is connected with a cycles.The model is not very low poly, more suitable for scenes, not for games.I will develop further.Thanks for the support.