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Phototronic Cell
No full textPhototronic Cell; Model 594; A device that detects or measures electromagnetic radiation by generating a potential at a junction (barrier layer) between two types of material, upon absorption of radiant energy
Sanford - Vernier Chronoscope
No full textSanford - Vernier Chronoscope; an instrument used to measure human reaction times
Timer
No full textTimer; An instrument that measures or records the amount of time taken by a process or activity
Bennett Hand-Tool Dexterity Test
No full textBennett Hand-Tool Dexterity Test (with manual); an apparatus used to provide a measure of proficiency in using ordinary mechanics tool
Psychogalvanometer
No full textPsychogalvanometer; A device that measures changes in the electrical resistance of the skin in response to emotional stimuli
Tuning Fork (electric)
No full textTuning Fork (electric); A two pronged (two tined) instrument of highly tempered metal, adjusted so as to generate sound waves of constant frequency. - from Warren's Dictionary of Psycholog