ocr: An item of interest for readers: For $1.50 Dear YIPL, businesses and schools are equipping them- If any YIPL reader has access to infc / selves with "dial-lock", which fits into on a pig device called a curdler please the "1" position on a dial phone, which publish the description of the resona- eliminates calls except from dial-lock in tor France tubes. for This use on device rioters. is developed Basically key holders.(For pushbutton phones, a. it is a tone generator, amplifier, and steel plate covers the buttons-Ed.) For every piggy action, there is an equal a fitted hi-fi with type resonat ...