With the time it saves, this spacer is the tool for anyone needing accurate spacing for drilling, riveting, etc. Extraordinarily accurate. Just spread the accordion-style spacer to the desired distance (stamped clearly on the tool), and then mark the spots to drill rivet holes, pound nails or set screws or bolts. Mark up to 10 holes at a time in increments of 1/4" or larger, with distances from 1/2" to 2" apart. Made of high-quality stainless steel that holds up to countless openings, closings, and adjustments. Try this tool and you'll never try to eyeball along a tape measure again. Saves time. Extraordinarily accurate. A useful tool for anyone needing accurate spacing for drilling, riveting, etc. Mark up to 10 holes at a time in increments of 1/4" or larger. Made from high-quality stainless steel that holds up to countless openings, closings, and adjustments. For larger pieces of material opt for our 20-hole version.