Starrett No. S 154 L parallels Set of Six (smallest is Lufkin) READ DESCRIPTION For Sale

From my father's estate is a Starrett No. S 154 L Parallels. Five of the six parallels are Starrett. The first and smallest in the set of 6 is a Lufkin Parallel (see picture). The red plastic holder is in fair condition, but the area of one snap the plastic has cracked and is loose. Three of the parallels have a professional etching on the backside which say AMI- Model Shop. I know very little about tools, so please message me with any questions. Examine the pictures carefully.