Leica Piper pipe lasers are perfect instruments for work in manholes, above ground or in the pipe itself. They are specifically suited for foul and storm sewer construction, gravity fed pipes and where a line grade and line is needed. Built for the tough working environment, each of the Leica Piper 100 and 200 lasers have extremely strong and durable cast aluminium housing. It is the only pipe laser that will fit within a 100mm/4″ pipe and includes a very clear and easy to read display allowing operators to see grade numbers, battery status and the line and level indication.