The selected thesis titled "Measurement of the Ambient Dose Equivalent Rate H*(10)/t (Devices and Measurements)" emphasizes the use of measurement devices and the methodology of the measurement itself. The thesis consists of two parts the theoretical part, whose name suggests what it consists of, and the experimental part, which includes a case study in which the collected measurement data using the Polimaster ionizing radiation measurement device were analyzed, presented, and discussed. Measuring device used during the research is a personal dosimeter for radiation measuring, type PM1605BT. Ambient dose equivalent plays a crucial role in assessing exposure to ionizing radiation and its rate, represented by the parameter H*(10)/t, indicates the intensity of radiation over a given period. The precision in measuring this parameter and also understanding it is an extremely important factor in the field of radiation protection within industrial, healthcare, and research environments, which are explained in the chapter related to the applications of ambient dose equivalent. The most important part of the thesis is the research or experimental section in which measurements of the ambient dose equivalent were carried out at several locations in the city of Sisak, in the various industries nearby. The results of these measurements present challenges and provide a basis for practical solutions. All of this is aimed at improving radiological protection and ensuring human health, safety and the environment safety in various areas. After the measurements are done and after comparing of the results, the conclusion is that there is no danger of radiation in city Sisak area so there is no need to establish any radiation protection measurements.