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3" diameter fume hose
Graduated markings allow precise volume measurement
including titanium
Model 1645-5 Magnification 1
Hallmark Stamp .750 For Ring Stamping Machine & Jewelry Marking Pliers Bausch & Lomb 3" diameter fume hoseThe . 750 Hallmark Stamp is designed for use with both ring stamping machines and jewelry marking pliers, securing firmly in place via a set screw for consistent, repeatable impressions. The stamp face is slightly radiused to conform to the interior curve of ring shanks, ensuring clean, legible marks on rounded surfaces. Impression height is 0. 80 mm unless otherwise noted. In European hallmarking standards, . 750 denotes 18k gold the designation
