Ring Sizer Set this tool is great for measuring finger sizes of customers and ring sizes with the ring stick. The rings are gold plated 7m wide and covers ring sizes 1 to 15 including 1/2 sizes for a total of 29 rings. There are 2 ring sticks; one is aluminum, covering sizes 1 to 15 with 1/4 size increments; the other is a chrome plated hollow metal ring stick also covering sizes 1 to 15 with 1/4 size increments.