3 Jewelers Tools For Resizing & Measuring Rings Rathburn Ring Stretcher This is a new Rathburn ring stretcher It can quickly enlarge plain bands Simply tapping the end spreads the outer mandrel and stretches the ring This is used for wedding bands size 8 and larger Plastic Finger Gauge This is a new plastic finger gauge This is great to give to customers The ring finger sizes go from size 4 - 13 in 1/2 sizes Plastic Ring Stick This plastic ring stick has two grooves This is a black plastic stick that has large easy to read white markings which measure rings from size 1-15 in 1/4 sizes This accurate and economical ring stick is great for use on glass showcases It measures approximately 12 1/2" (317 mm) long Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.