Adafruit
Adafruit PCB Ruler v2 - 6 - Default
Keep a handy component reference at your fingertips with this gold-plated PCB ruler. Measuring approximately 25 × 152 mm (1″ × 6″) on standard-thickness FR4,...
Keep a handy component reference at your fingertips with this gold-plated PCB ruler. Measuring approximately 25 × 152 mm (1″ × 6″) on standard-thickness FR4, it features the most common surface-mount component packages you'll encounter — QFN, TDFN, SOIC, SOP, J-Lead, and more — all shown at actual size for quick identification.
Beyond the component footprints, the ruler includes a font size guide, trace-width diagram, and a set of AWG-sized drill holes so you can gauge wire thicknesses at a glance. The inch side is marked in 1/10″ increments and the centimetre side in 0.1 cm marks.
Key Features
- Common SMD Package Reference – Actual-size footprints for QFN, TDFN, SOIC, SOP, J-Lead, and more
- Measurement Scales – Inches (1/10″ increments) and centimetres (0.1 cm marks)
- Trace-Width Diagram – Visual reference for PCB trace widths
- AWG Drill Holes – Gauge wire thicknesses quickly
- Font Size Guide – Reference for silkscreen text sizing
- Gold-Plated FR4 – Durable standard-thickness PCB with a premium finish
Specifications
- Dimensions: ~25 × 152 mm (1″ × 6″)
- Material: Standard-thickness FR4 with gold plating
- Version: v2 (inch markings in 1/10″ increments)
Ideal For
- PCB designers and electronics engineers
- Identifying SMD component packages at the bench
- Quick wire and trace-width reference
- Gifts for makers and hardware enthusiasts
Package Contents
- 1× Adafruit PCB Ruler v2 (6″)
Jargon buster
Plain-language definitions for the technical terms used above.
- AWG
- American Wire Gauge is a numbering system for wire thickness, where a lower number means a thicker wire. The AWG rating matters because thicker wire can usually carry more current with less voltage drop and heating.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
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