MCM Electronics

6" PCB Reference Ruler By Adafruit Industries (1554) MCM Part #21-14610

5 stars 4 reviews

The first time you soldered up a surface mount component you may have been surprised "these are really small parts!" and there's dozens of different names too! QFN, TDFN, SOIC, SOP, J-Lead, what do they mean and how can you tell how big they are? Now you can have a reference board at your fingertips, with this snazzy PCB reference ruler.

Specifications Top

Measuring approx 1" x 6", this standard-thickness FR4, gold plate ruler has the most common component packages you'll encounter. It also has font size guide, trace-width diagram, and a set of AWG-sized drills so you can gauge your wire thicknesses. Edges are labeled in inches with 1/8th marks and cm with 0.1cm marks.

  • Dimensions: 25.6mm / 1" x 153.98mm / 6.06" x 1.64mm / 0.06"
  • Weight: 12.07g

  • Part Numbers
    MCM Part #:21-14610
    Adafruit Industries Part #:1554
    Package Specifications & Dimensions
    Weight:0.02 lbs.
    Warranty:90 days
    Need to Return?
    Length:7.5 in.
    Width:2 in.
    Height:0.5 in.
    Shipping Information
    Extra Shipping Charge:No
    Drop Ship:No

    Product Reviews Top

    • by frd1963

      on 1/18/2016

      Great for what it is, a novelty.

      Overall: 5 out of 5

      This is a novelty. Anyone who is serious about measuring things with this or needs the reference info on it will likely already have tools/sources for that. This is more of a badge of geekdom.
      I bought one for myself, one for my daughter, and one for her to give to her favorite geek teacher, and we all love it.

    • by CJWalker519

      on 10/28/2015

      Neat and Useful

      Overall: 5 out of 5

      Other than being extremely useful it's just plain neat. Built from a PC board with traces and silkscreens to make up the letters and shapes.

    • by wjustic

      on 1/13/2015


      Overall: 5 out of 5

      This is the coolest ruler you will ever own. I bought several to give out to friends and they love them!

    • by DrJElectric

      on 1/1/2015

      Perfect for any geek

      Overall: 5 out of 5

      I bought this for my son, and one for me, for Christmas it was a huge hit with my son. He is a computer science major in college and thought that it was the best ruler he has ever seen. He can't wait to show it off in the spring.

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