Temperature threshold testing is a key element of neurological examinations for neuropathy. Temperature thresholds at the fingertips are included as part of a standardized test for quantifying neurological disorders caused by hand-transmitted vibration, as it has been found that vibration at the fingertips can cause loss of neurological sensation.The paper seeks to determine if there is a correlation between finger size and the point at which an individual can detect a change in temperature. A total of 19 healthy volunteers (9 males and 10 females, age range 20-22 years) participated in an experiment which was designed to test the effect of finger diameter on the thermotactile thresholds at hot and cold temperatures. A thermal aesthesiometer was used for the experiment which followed a method of limits process with a baseline temperature of 32.5°C. The subjects placed the distal phalanx of each finger onto the apparatus and responded when they felt a change in temperature. It was found that an increase in diameter, as measured with a ring sizer, resulted in a lower hot threshold and higher cold threshold for thermotactile responses. Gender effects were minimal and dominance had no impact on the findings. Further studies are recommended to explore the effect of initial skin temperature and thermotactile thresholds and more analysis on the difference between each finger will help determine the most accurate choice for future testing. This study concludes that finger size is important and should be considered when assessing temperature thresholds at the fingertip.