A calibrated paper clip is a reliable measure of two-point discrimination.

Objectives: The primary objective of this study was to compare two different instruments for assessing digital nerve function; a secondary aim was to determine interobserver agreement among emergency physicians by using static two-point testing of digital nerve function.

Methods: This was a prospective, blinded, observational study of static two-point discrimination involving healthy volunteers aged 18-59 years. The authors compared two instruments (paper clip set or Disk-Criminator) to assess two-point discrimination of the index and long fingers of the dominant hand.