This device consists of a brass cylinder with capsule. Above the opening in this capsule is ...

Measurement: Sensory (auditory) perception. Instrument for determining the discrimination threshold of the pitch. Physical description: This device ...

Measurement: Instrument for investigating motor fatigue. This is part of the 'Mosso Ergograph' (the 'appareil d'immobilisation') ...

This instrument consists of two red wooden columns with a metal lamella. Mirrors are attached to ...

A 1000-watt lamp can be adjusted in height and width by rotary knobs at the back ...

A wooden viewing box has an opening at the front and top. Inside is an oblique ...

This eye muscle model consists of two wooden spheres about twice the diameter of the eye. ...

Measurement: Sensory (auditory) perception. Instrument for examining timbre. Operation: A series of wooden pipes are supplied with ...

The tubes are numbered. They are stored in a wooden box, on which has been written ...

The chronograph consists of a powerful electromotive drive mechanism (external) that moves the higher of two ...

This model of chronograph consists of two drive rollers (in the centre of the unit), a ...

The Hipp chronoscope is a mechanical chronometer that obtains energy from a weight. Its course is ...

A millimetre scale is mounted on one of the curved legs of this compass. The screw ...

Measurement: Sensory (auditory) perception. Instrument to calculate the differential threshold. Operation: The two metal strings (hence di-chord) ...

yarn bobbins Context: experimental psychology (discipline)

Three gas burners with undulating stand. Context: experimental psychology (discipline)

Three gas lamps with a cover: two small identical ones and one larger one. Context: experimental psychology ...

This olfactometer designed by Zwaardemaker consists of a thin glass tube about one centimetre in diameter. ...

Measurement: Sensory (auditory) perception. This device was used to determine the absolute and differential threshold for ...

compasses Context: experimental psychology (discipline)

This electromagnetic tuning fork has a frequency of 100 Hz. It has a wooden base and ...

This electromagnetic tuning fork consists of an electromagnet located between the prongs. This is not the ...

Measurement: Sensory (auditory) perception. This device was used to determine the absolute and differential threshold for ...

This esthesiometer is a modified version of the device of the American psychologist C.H. Judd. Using ...

Two needles are attached to metal bars that can slide about their axes. The distance between ...