Bergeon 5235-PN Black Delrin High Precision Swiss Ring Stick

The Bergeon 5235-PN is widely regarded as one of the most precise ring sticks available to professional jewelers. Crafted from black Delrin, this high-precision measuring tool will not scratch metal rings during sizing — a critical advantage when working with finished pieces. Made in Switzerland to Bergeon's exacting standards, it offers dual-sided graduation systems to accommodate both USA and French ring sizing conventions in a single instrument.

The stick measures 250 mm (9-7/8") in total length including the handle. One side displays USA sizes 1–15 alongside diameter measurements ranging from 13.0 mm to 24.2 mm. The reverse side carries French sizes 1–36 with corresponding circumference markings from 41 mm to 76 mm — making this tool equally at home in international workshops.

Features

• Black Delrin construction will not scratch metal rings
• Dual-sided graduation system: USA and French sizing on a single stick
• USA sizes 1–15 with diameter in mm on one side
• French sizes 1–36 with circumference in mm on the reverse
• Total length: 250 mm (9-7/8") including handle
• High-precision manufacturing for accurate, repeatable measurements
• Made in Switzerland by Bergeon

Specifications

Notes

Also available in White Delrin (Bergeon 5235-PB) and Aluminum (Bergeon 5235). Matching ring finger gauges from Bergeon are also available: Bergeon 5236C, Bergeon 4286, and Bergeon 1311-A.