A physical quantity measuring instrument comprising: a three dimensional circuit component comprising a resin block and an electronic component being mounted on the block; a cylindrical case that covers an outer circumference of the three-dimensional circuit component; a sensor module that is disposed near a first end of the three-dimensional circuit component and outputs a signal to the electronic component; and a contact member that is disposed near a second end of the three-dimensional circuit component opposite to the first end and enables a signal transmission and reception between the electronic component and an external device, wherein the three dimensional circuit component further comprises: a plate on which the electronic component is mounted; ribs being formed on both sides of the plate; and a plurality of electrically-conductive patterns being formed along a three-dimensional shape of the block in order to establish an electrical connection to the electronic component, the electrically-conductive patterns each having an end that serves as a contact portion opposed to the electronic component to electrically contact with the electronic component, a solder is provided between a surface of the electronic component opposed to one of the electrically-conductive patterns and a solder-disposed section (64B1) provided in the contact portion of each of the electrically-conductive patterns, and a section of each of the electrically-conductive patterns other than the solder-disposed section (64B1) and a section on which the electronic component is mounted is internally formed in the block. a three dimensional circuit component comprising a resin block and an electronic component being mounted on the block; a cylindrical case that covers an outer circumference of the three-dimensional circuit component; a sensor module that is disposed near a first end of the three-dimensional circuit component and outputs a signal to the electronic component; and a contact member that is disposed near a second end of the three-dimensional circuit component opposite to the first end and enables a signal transmission and reception between the electronic component and an external device, wherein the three dimensional circuit component further comprises: a plate on which the electronic component is mounted; ribs being formed on both sides of the plate; and a plurality of electrically-conductive patterns being formed along a three-dimensional shape of the block in order to establish an electrical connection to the electronic component, the electrically-conductive patterns each having an end that serves as a contact portion opposed to the electronic component to electrically contact with the electronic component, a solder is provided between a surface of the electronic component opposed to one of the electrically-conductive patterns and a solder-disposed section (64B1) provided in the contact portion of each of the electrically-conductive patterns, and a section of each of the electrically-conductive patterns other than the solder-disposed section (64B1) and a section on which the electronic component is mounted is internally formed in the block. a plate on which the electronic component is mounted; ribs being formed on both sides of the plate; and a plurality of electrically-conductive patterns being formed along a three-dimensional shape of the block in order to establish an electrical connection to the electronic component, the electrically-conductive patterns each having an end that serves as a contact portion opposed to the electronic component to electrically contact with the electronic component, a solder is provided between a surface of the electronic component opposed to one of the electrically-conductive patterns and a solder-disposed section (64B1) provided in the contact portion of each of the electrically-conductive patterns, and a section of each of the electrically-conductive patterns other than the solder-disposed section (64B1) and a section on which the electronic component is mounted is internally formed in the block.