Memory Drum

(Four Variable Speed Electrical with Manual
The Electrical Memory Drum is a very useful versatile and study and
accurate instrument.As usual it can be used in most of the Learning,

Memory and Forgetting Experiments like Serial Verbal Learning, Retro-
active Inhibition.The present instrument (apparatus) operates on

230 V 50 Hz.A. C. and has a removable / detachable Drum. One
stimulus each can be Exposed to the subject at the desired speed
(1, 2, 4, 8) with the Exposure Time 1, 2, 4, 8 Sec. respectively.The
maximum number of Stimulus Lists can be SIX (06).The Control Box
(Unit) contain and Electric Motor and a FOUR (04) Speed Gear Box
and Clutch Mechanism. There are Two Levers. Each ON/OFF Switches
and two Indicator Lights on the front panel of the Control Unit. Each
ON/OFF Switch and Indicator Light is marked with ‘MOTOR’ and
‘LIGHT’ respectively.