Quick Answer: The Large Needle Electroscope is an extra-large electroscope for classroom demonstrations of electrostatic principles, with a light-weight metal vane pointer and a transparent scale for measuring its deflection.
Last updated: October 2026
Key Features
Extra-large needle electroscope
Light-weight metal vane acts as the pointer
Vane deflects when the electroscope plate is charged
Transparent scale measures the angle of deflection
Front glass window slides up to admit ionising material
Assembled size 250 mm x 200 mm x 120 mm
Technical Specifications
Specification
Value
Pointer
Light-weight metal vane
Scale
Transparent
Assembled size
250 mm x 200 mm x 120 mm
About This Product
When the electroscope plate is charged, the light-weight metal vane deflects and the transparent scale shows the angle of deflection. Its extra-large size is meant for classroom demonstrations, and the front glass window slides up so ionising material can be placed in the chamber.
Frequently Asked Questions
Q1. How is the deflection measured? A transparent scale is provided to measure the angle of the deflection.
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