> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# SparkFun PCB Ruler - 12 Inch

**Type:** Product page · **SKU:** TOL-15295 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sparkfun-pcb-ruler-12-inch.html ([markdown](https://core-electronics.com.au/sparkfun-pcb-ruler-12-inch.html.md))

One Ruler to Rule them All. A PCB ruler with useful conversions and information...

## Pricing

- **Price:** $19.90 (inc GST) — $18.09 AUD, exc GST
- **Quantity discounts:** 5+ $17.55 (exc GST) · 25+ $17.18 (exc GST) · 100+ $16.46 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 18 and Sep 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=TOL-15295:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/TOL-15295:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

One ruler to rule them all. This is a basic 12 inch ruler, but made from a PCB. Sparkfun have included a lots of useful information on each side of the ruler that you might use on a daily basis including Wire Gauge holes, transistor diagrams, common fractions, Roman numerals, and metric to imperial conversions. Most importantly, the ruler provides you with a straight line and centimeter markings one side and inch markings on the other side.

You'll also find a small protractor in the middle for all your angle measurement needs. While we figured you have a fairly good idea how to use a ruler we do have a tutorial to explain all the information you'll see!

 [Get Started with the How to use a Ruler Guide](https://learn.sparkfun.com/tutorials/how-to-use-a-ruler)- 12 inch PCB ruler with markings down to 0.05" or 1/32"
- 30.48 cm PCB ruler with markings down to 0.1mm
- Electrical Equations such as Ohm's Law and Parallel Resistors
- Keyboard Alt Codes
- Color Wavelengths
- Protractor
- Metric Prefix Summary Chart
- Metric conversions
- Morse Code
- Transistor Diagrams
- Roman Numerals
- Fraction Summary
- Wire Guage Chart
- Tap and Drill Chart
- Size: 12"x 1.5"
 
- [How to Use a Ruler](https://learn.sparkfun.com/tutorials/how-to-use-a-ruler)
- [GitHub Hardware Repo](https://github.com/sparkfun/SparkFun_PCB_Ruler)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_924.jpg)