In our daily activities, we utilize not only the finger pad but also the sides and hemispherical ends of the fingers when handling an object. Therefore, providing tactile perception across the entire fingertip is deemed crucial for achieving advanced teleoperation. To fulfill this goal, understanding the spatial acuity distribution of the fingertip becomes imperative. Although it is generally known that the tactile acuity of the fingertip is different from that at the end of the finger and the finger pad, the details of such a change in resolution are not known, nor is the resolution of the side of the finger. We measured the spatial acuity of the entire fingertip in detail and found that the tactile acuity from the finger end to the finger pad changes almost linearly, with a steep decrease in tactile acuity at the finger side.