Easy and cost effective method of determining level of fluid in a 205L drum. Fitted with a 3/4"BSP thread which screws directly onto the smaller hole on 205L drums, leaving the 2"BSP thread free for installing pumps. Indicator face is marked from 0-210 litres. Unit is fitted with a water filled polyethylene float allowing the indicator to be used with a variety of fluids. Note: TP129 is not a precise measuring device, unit is for indication purposes only.