A gas turbine comprising a combustion chamber, a sensor and a mountable attachment for positioning the sensor in the combustion chamber, the mountable attachment, comprising: a mounting member having a hollow elongated configuration to at least partially incorporate the sensor therewithin, the mounting member comprising: a first end portion having a shoulder member projecting radially inward from the first end portion, a second end portion having internally configured threads to threadably screw the mounting member to a counterpart thereof within the combustion chamber, configuring the sensor within the combustion chamber to measure variable physical parameters within the combustion chamber, and a third portion between the first and second end portions, the third portion having a flange member projecting radially inward from the mounting member, wherein the sensor extends within the mounting member from the first end portion to the second end portion, being at least partially engaged at the shoulder member and the flange member; and at least one primary resilient member disposed within the mounting member between the shoulder member and the flange member in a coordinating manner with the sensor, wherein the at least one primary resilient member is capable of: applying an axially outward force across at least the mounting member to prevent thereto from loosening from the counterpart, and providing a mounting torque for at least mounting the sensor at a target position within the combustion chamber. a mounting member having a hollow elongated configuration to at least partially incorporate the sensor therewithin, the mounting member comprising: a first end portion having a shoulder member projecting radially inward from the first end portion, a second end portion having internally configured threads to threadably screw the mounting member to a counterpart thereof within the combustion chamber, configuring the sensor within the combustion chamber to measure variable physical parameters within the combustion chamber, and a third portion between the first and second end portions, the third portion having a flange member projecting radially inward from the mounting member, wherein the sensor extends within the mounting member from the first end portion to the second end portion, being at least partially engaged at the shoulder member and the flange member; and a first end portion having a shoulder member projecting radially inward from the first end portion, a second end portion having internally configured threads to threadably screw the mounting member to a counterpart thereof within the combustion chamber, configuring the sensor within the combustion chamber to measure variable physical parameters within the combustion chamber, and a third portion between the first and second end portions, the third portion having a flange member projecting radially inward from the mounting member, wherein the sensor extends within the mounting member from the first end portion to the second end portion, being at least partially engaged at the shoulder member and the flange member; and at least one primary resilient member disposed within the mounting member between the shoulder member and the flange member in a coordinating manner with the sensor, wherein the at least one primary resilient member is capable of: applying an axially outward force across at least the mounting member to prevent thereto from loosening from the counterpart, and providing a mounting torque for at least mounting the sensor at a target position within the combustion chamber. applying an axially outward force across at least the mounting member to prevent thereto from loosening from the counterpart, and providing a mounting torque for at least mounting the sensor at a target position within the combustion chamber.