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The Tektronix Type 315 and 315D are single-channel oscilloscopes | The Tektronix Type 315 and 315D are single-channel oscilloscopes | ||
[[introduced in 1952|introduced in September 1952]]. | |||
They use [[3WP2]] 3-inch CRTs and are mechanically similar to | They use [[3WP2]] 3-inch CRTs and are mechanically similar to | ||
early 500-series monolithic scopes such as the [[511|511A]]. | early 500-series monolithic scopes such as the [[511|511A]]. |