Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
DC Barrel Plug Seven-Size Gauge Card
A 106 x 30 x 8 mm gauge card for sorting a drawer of unlabeled wall-warts. It has seven through-bores with lead-in chamfers, one for each DC barrel plug sleeve size from 2.5 to 6.3 mm (2.5, 3.0, 3.5, 4.0, 4.75, 5.5 and 6.3 mm OD). Each bore is printed about 0.4 mm over size, so the right plug slides in snugly, rattles in the next size up and won't enter the next size down. Recessed dots under each bore count 1 to 7. A 5.5 mm hang hole lets you keep it in the adapter bin. To tell 5.5x2.1 from 5.5x2.5, use a 2.3 mm drill shank: it fits into the 2.5 mm pin hole of the plug but not the 2.1 mm one.
Stepped Wire Strip Length Gauge
A bench gauge with eight stepped lanes (5, 6, 7, 8, 10, 12, 15 and 20 mm). Push the wire into a lane until it bottoms out, close the stripper flush on the face, and you get that exact strip length every time, so Powerpole, Dupont and ferrule crimps come out consistent. Each lane has a 4.2 mm bore that takes roughly 20–14 AWG insulation (up to about 4 mm OD) and a 2.4 mm bore for 26–22 AWG hookup wire (up to about 2.2 mm OD). The block is 104 x 26 mm, and each lane's height shows its depth.
Hex Standoff Length Gauge Rack
A 124 x 28 x 28 mm staircase rack that sorts AND measures female-female hex standoffs: eight columns with pockets at 5, 6, 8, 10, 12, 15, 20 and 25 mm, all pocket floors on one plane so a standoff sitting flush with the rim is that length, proud is longer, sunk is shorter. Front lane bores are 7.0 mm (M2.5/M3 hex at 5.0-5.5 mm across flats, plus round spacers), rear lane 8.6 mm (M4 hex at 7 mm across flats), with 5 mm scale grooves down both sides and two 3.4 mm M3 clearance holes to screw it to a shelf or bench.