History of Psychology Collection

Auditory Research Apparatus

C.H. STOELTING TUNING FORK

This tuning fork is mounted on a wooden box which amplified the sound intensity. The tuning fork vibrated at a fixed frequency and could be used for auditory demonstrations or to produce auditory stimuli for experiments.

 

C.H. STOELTING ADJUSTABLE TUNING FORK

This tuning fork is mounted on a wooden box which amplified the sound intensity. The tuning fork frequency could be adjusted by sliding the weights up or down the tines. It was used for auditory demonstrations or to produce auditory stimuli for experiments.