Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Metal Finger Gauges by Grobet Sale $36.90 | / SKU 35-0186 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Metal Finger Gauges Graduated in half sizes by US standards. Bright nickel-plated with easy-to-read numerals. 3mm half round ring sizes 1-15.