Besides just measuring 45° and 90° like a combination square, the Penta Square also measures 22.5° and 60°. But, that’s only four measurements; penta is a prefix for five. Either they’re considering 180° a measurement, or else they’re call it that because of the irregular pentagon-shaped body.
Kapro etches the 12″ stainless-steel blade in both Inch and Metric graduations. The bubble vial rotates within the body to check level and plumb in “all” positions. Absent is the thumb screw locking mechanism of a normal combination square. They’ve replaced it with their EasyLock mechanism, which they neglect to show in the literature.
Depending on where you look, the Penta Square could cost you as little as $6.
Penta Square [Kapro]
Penta Square [Woodworker's Supply]
Via Amazon [What’s This?]
If you enjoyed this article, please consider sharing it!
6 Responses to The Penta Square
Leave a Reply
TM on Flickr
![RICH-CON No. 2 [shows Logo on side of plane]](http://farm8.staticflickr.com/7236/7230831382_240f44f2f4_s.jpg)
Recent Comments
{ What did you do about the glass surfaces on the limbs? Did you sand and refinish them as well, and if so, what did you... } – May 22, 9:48 PM
{ The DP350 is discontinued and some people are saying it has a lot of breakdowns. What have you experienced since 2010 when you did this... } – May 22, 12:04 PM
{ Fool me twice, shame on me! Do not buy into any battery fix from Ryobi or some tool review monger. Remove the dead batteries from... } – May 22, 10:52 AM
{ He should produce it in small quantities,their is so much demand ,but little in the way of products for the disabled.A little reminder,665 confirmed child... } – May 21, 2:06 PM
{ Note the similarity to the Wilton: http://www.amazon.com/Wilton-11127-Opening-Utility-Workshop/dp/B0008JF9PO/ref=sr_1_2?s=hi&ie=UTF8&qid=1337607288&sr=1-2 @ $100.30 Guess I'll go for the Sears. The Amazon price is beter then a lot on E-bay... } – May 21, 7:40 AM
I can see from the picture that it can measure and angle >90. Maybe, 120? So, that is a fifh angle.
142.5 degrees? Not sure why that would be the 5th angle. 72 or 144 would be more Penta.
There’s more information in the U.S. Patent Application: http://www.freepatentsonline.com/y2002/0088130.html
and the U.S. Patent: http://www.freepatentsonline.com/6553677.html
You’ll need to log in to see the pdfs of the actual application and patent, but that site is really interesting.
Do we really need another Square……
ShopMonger
[...] The Penta Square Besides just measuring 45° and 90° like a combination square, the Penta Square also measures 22.5° and 60°. But, that’s only four measurements; penta is a prefix for five. Either they’re considering 180° a measurement, or else they’re call it that because of the irregular pentagon-shaped body. [...]
If you rotate this square 90 degrees to the left the 60 becomes a 30. you can also use the level as a 30 by just putting it on the top of the board instead of the bottom.