Dividers with Spring Action For measuring distances between points and scribing circles or arcs. Spring action. Available in 3 sizes: 35-080 has a max. opening of 3-1/4" (183mm) and leg length of 3" (176mm), the model 35-086 has a max. opening of 3-3/8" (186mm) and leg length of 4" (102mm), and the model 35-092 has a max. opening of 6-3/4" (171mm) and leg length of 6" (152mm).