Device and apparatus for holding a transducer

A coupler for a transducer, the coupler configured to be secured between a mounting portion and a clamping portion of a transducer holder, the mounting portion having a first through hole with a conical seat disposed therein, at least a portion of the first through hole configured to receive the transducer, the clamping portion having a second through hole and a clamping surface, at least a portion of the second through hole configured to receive the transducer, the coupler having a central axis and comprising:

• a first interface surface arranged about the central axis and configured to sit on the conical seat;
• a second interface surface arranged about the central axis and disposed on an opposite side to that of the first interface surface;
• and
• a third through hole disposed along the central axis and configured to snugly receive the transducer;
• wherein in response to the clamping surface of the clamping portion pressing against the second interface surface of the coupler, the first interface surface of the coupler is pressed against the conical seat of the mounting portion, thereby securely capturing the coupler and securely positioning the transducer relative to the mounting portion.