This research that aimed to (1) produce instruments that were feasible to measure the ability to solve physics problems and nationalism, and (2) determine the quality of instruments that have been developed. This research was conducted through four stages, namely the design, preparation of tests, test trials, and preparation of valid instruments. The instruments developed are physics problem solving ability test instrument consists of 10 number essay questions and nationalism questionnaire consists of 35 items arranged in the form of a Likert scale. This research used qualitative and quantitative analysis provided by eight validators (experts, physics teachers, and peer reviewers), and empirical validation analysis. The content validation showed that the instruments developed were in the valid category with a validity value of 1.00 for each item in the two instruments developed. Empirical validation involved 250 high school students who were randomly selected. It was found that: (1) instruments developed in accordance with Partial Credit Model (PCM) in which all items developed were in the range of 0.77 to 1.33, (2) the instrument reliability was in the good category with in the range of 0.72 to 0.98 for both instruments, (3) the level of difficulty of problem solving ability instrument has good criteria in the range of -0.88 to 1.81e.