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Triple Crystal Detector, Early 20th Century
Inventory Number: 84133
Date: Early 20th Century
Maker Details: Unknown
Inscription: None
Size: 100 x 75 x 100 mm (total height)
Materials: Brass, copper, ebonite.
Other Given Number(s): Christie's 129, 841 pt (white tag).
Notes:
Triple Crystal Detector, with swivelling support crystals, screw contact with copper tip, and weight-adjusting screw on pivoted arm, on ebonite base. Previously catalogued with Eight Graduated Swivelling Coils (Inv. Num. 28254).
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