American Woodworker

Free Product Guide >>

Syndication

 


 

 

 

Woodwork 

Winter 2013-2014

Preview this issue

 

Protractor Angle Gauge

RATE THIS:

 

 

 

 

 

When I was in high school, my math teacher showed us an easy way to indicate angles. She simply fastened two see-through plastic protractors on top of one another. I’ve used this simple devise to draw and check angles in my workshop ever since.

 

Start with a pair of identical protractors from an office supply store (about $1 each). Carefully drill out the center holes to exactly fit a 6-32 x 3/8-in. flat-head machine screw. Next, drill a countersink for the screw head in the bottom protractor, so the protractor sits flat for drawing angles. Install the screw and nut, making sure the protractors are precisely aligned. During use, the top protractor’s zero line indicates the angle on the bottom protractor’s scale. The angle matches the opening, because the bottom edges of the protractors are parallel to the zero lines. 

 

 

 

 


Filed under:

Comments

Tony Oliver wrote re: Protractor Angle Gauge
on 10-15-2009 7:42 PM

Very clever!

OlManJeb wrote re: Protractor Angle Gauge
on 10-20-2009 12:51 PM

That's the slickest tip I've seen in a while. Thanks.

boats wrote re: Protractor Angle Gauge
on 11-05-2009 8:06 AM

that is a great ideal