Wireline Tools 2 : Special tools or equipment made to be lowered into and retrieved from the well on a wireline (small-diameter steel cable), e.g., packers, swabs, gas lift valves, measuring devices, etc. (ITOGP)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}