| http://www.w3.org/ns/prov#value | - Mounted on the outer face of the bar 25 concentric with the pin 26 is a disc 30 of dielectric material, such as plastic or the like, and secured on the outer face of the disc 30 is an arcuate resistance element 31 which may be of composition material, or it may be of the wire- Wound variety.
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