Introduction: Beam Compass

This handy beam compass is made with two little wooden blocks and a aluminium rod.

It works also very well to adjust a table saw.

Difficulty: easy

Time to build: one hour

Tools I used:

  • table saw (a hand saw is also good)
  • Drill press (or a hand drill)
  • Sandpaper


  • two little wooden blocks
  • aluminium rod.
  • a nail
  • one pencil

Step 1: Cut Two Little Wooden Blocks

Picture of Cut Two Little Wooden Blocks

Depending from the diameter of the aluminium rod I cut two little pieces of hardwood, a little bit bigger, on my table saw.

Step 2: Drilling Holes

Picture of Drilling Holes

The first block gets a hole for the aluminium rod and a second one for the pencil.

The second block gets one hole for the aluminium rod, one for the nail and a third one for a machine screw..

After drilling all holes, the second block was splittet on the table saw

Step 3: Add a Nail

Picture of Add a Nail

I pushed a nail with a hammer in the pilot hole, cut it with pliers and sharpened it with a file.

Step 4: Assembling

Picture of Assembling

Just put the block with the pencil hole on one end of the aluminum rod

and the block with the nail over the aluminum rod and tight it with a machine screw,

Add a pencil. If it is to tight, drill the hole a little bit wider. If it is to wide, add a piece of tape.

Step 5: The Result

Instead of thousand words, please watch the video

If you like it, I am glad if you vote for it in the Build a Tool Contest 2017

If you want to see more of my work, subscribe to my Youtube-channel


Prfesser (author)2017-02-03

Simple and very useful! Commercial 'trammel points' are rather expensive; this is a great alternative!

StephanP1 (author)Prfesser2017-02-03

Thank you!

About This Instructable




Bio: If you like simple solutions then here you can find some of my crazy ideas.
More by StephanP1:Simple and Precise Height GaugeRubber Band Powered Bench Dogs Awesome Tape Measure Improvement
Add instructable to: