Lascar el enviropad tc multi function thermometer with inbuilt data graphing lascar el enviropad tc cal t the lascar el enviropad tc is a thermometer with in built data logging and graphing capabilities it is a robust easy to use handheld device that takes and records temperature readings via the attached k type probe that is supplied with the unit a large touch screen colour display indicates temperature maximum and minimum readings and will produce a graph of the datathe lascar el env