Amazon.com: StewMac String Action Gauge And Ruler, Inches, Stainless Steel - Designed by StewMac, The Original measuring tool for acoustic and electric guitar, and bass setup : Musical Instruments
StewMac String Action Gauge And Ruler, Metric, Stainless Steel - Designed by... | eBay
StewMac Flexible Shop Rule, 6" Flexible Rule
StewMac Shop Rule Precision Ruler, Measures in Inches | eBay
StewMac Shop Rule Precision Ruler, Measures in Inches - Amazon.com