Found 2 3D-models for “centerline marker” across many websites

#Pentel GraphGear 1000#Ambidextrous#for PG1019 9mm#tools#center-Line#3-sizes#Carpentry hand tool#One-handed operation#center line#hand tools
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Center Scriber Line Tool - One-Handed (R&L) - for GraphGear 1000

Center Scriber Line Tool - One-Handed (R&L) - for GraphGear 1000

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Center Line Finder Jig

Center Line Finder Jig

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