This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Xtalcollection. crystal oscillators in electronic equipment Public domain Note the largest component pictured is not crystal it is an ultrasonic delay line as used in colour TV scanned this picture myself Uploader Public Domain en collection of old electronic xtal x'tal xtal Crystal components scanned this picture myself Public domain