American Diagnostic Corporation (ADC) Neurological Instruments - Manual (Page 3)

Select models (Buck Hammer - 3691 and Babinski Hammer - 3697) have concealed needles and/or
brushes for additional reflex and neurological testing. To use these components, unscrew the base of
the hammer’s handle. For Buck Hammers, the concealed needle can be accessed by unscrewing the
top of the device and pulling the needle free.
Operation (For all Tuning Forks):
To operate your tuning fork, hold it as close as possible to the end. For best results, strike the tuning
fork gently against a hard surface near where the forks start. It is not necessary to strike the object very
hard and care should be taken not to strike an object that can be easily damaged, such as a glass table
top or other similar object.
Alternately, the tuning fork may be activated by ‘snapping’ the tips of the forks. Place your thumb and
index figure on the outside of each fork and then slide your fingers off the tip of each fork while moving
them towards each other, as if you were snapping. The motion will set the two forks vibrating.
Helpful Tips when Holding the Tuning Fork:
• Keep your wrist relaxed and flexible.
• Keep your fingers firm, but don’t press hard against the stem of the tuning fork.
• Your elbow should be bent and relaxed, and your arm should not be tense.
• Ensure that you are holding the tuning fork as close to the end as possible.
• Avoid touching the tines of the tuning fork during use.
• Avoid grasping the tuning fork tightly.
• Avoid having your arm in a stiff or locked position.
• Avoid activating the tuning fork by hitting it against your hand.
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