This is a rivet fan, or rivet spacer. It opens and closes to evenly space rivets, other fasteners, or even just marks, in a straight even line. Used in aviation, auto racing,
10 Sets 3mm 4mm 5mm Solid Brass Chicago Screws Rivets for - Etsy
Suppliers of Blind rivets
Materials | Free Full-Text | Influence of Rivet Diameter and Pitch on the Fatigue Performance of Riveted Lap Joints Based on Stress Distribution Analysis
Blind Rivet Global Market Insights 2023, Analysis and Forecast to 2028, by Manufacturers, Regions, Technology, Application, Product Type
Double Cap RIVETS – Emmaline Bags Inc.
T-Grid Rivet to Hanger Assembly, 3/4" EMT | nVent CADDY