diff --git a/pcb-jig.scad b/pcb-jig.scad
index ee927f8..e100a4a 100644
--- a/pcb-jig.scad
+++ b/pcb-jig.scad
@@ -17,16 +17,17 @@ module pcb_jig(width, height) {
                 cube([15, 20, 20], center = true);
         
         translate([2.5, 0, -1]) {
+            spacing = max(1, floor(height / 45)) * 45;
             translate([width / 2 + 10, 0, 0]) {
-                translate([0, height / 2 - 3.25, 0])
+                translate([0, spacing / 2, 0])
                     cylinder(h = 20, d = 6.5);
-                translate([0, -height / 2 + 3.25, 0])
+                translate([0, -spacing / 2, 0])
                     cylinder(h = 20, d = 6.5);
             }
             translate([-width / 2 - 15, 0, 0]) {
-                translate([0, height / 2 - 3.25, 0])
+                translate([0, spacing / 2, 0])
                     cylinder(h = 20, d = 6.5);
-                translate([0, -height / 2 + 3.25, 0])
+                translate([0, -spacing / 2, 0])
                     cylinder(h = 20, d = 6.5);
             }
         }