Patio Or Pipework Gradient Level Tool : Black

This Small Tool Attaches To Any Existing Spirit Levl From 19 To 23Mm In Width. Measure The Distance From The End Of The Level Eg 70Cm To Setup A 1 In 70 Fall For Your Patio Or Pipework. Slide The Tool Along To Measure An Existing Fall , 55Cm From Then End To Get Level If A 1 In 55 Fall.