Abstract: An extendable device for positioning and leveling siding planks during installation supports a row of siding planks and has one or more integrated levels per a standard latch. However, the device also telescopes out to a greater length, equal to the combined lengths of several planks of siding. This device can also be used in roofing for the placement of shingles. There are three different sizes which extend to four feet, eight feet, and sixteen feet in length.