a stair track device adjustable to correspond with a variety of physically different stairways is shown . the stair track device includes right side rails which slidably engage one another in telescopic fashion to form a rail assembly . locking pins fix the telescopic position of the rails with respect to one another . a corresponding mirror image left rail assembly is secured in position with respect to the right rail assembly by way of rods removably attached to each rail assembly . lower and upper support members provide anti - skid support as well as establishing a proper angular relationship between the rail assemblies and the stairway . the rails can be detached from one another collapsed and compactly stored for easy transport to any location .