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This transparent 180° protractor ruler features 8ths graph, 16ths to the inch, and centimeter scales. The engineer protractor ruler features centimeter and tenths to the inch graph scales. Both are laminated for durability.
Note — Formerly known as C-Thru, the products you receive may be labeled with either the Westcott or C-Thru brand name as C-Thru company makes a transition to new ownership. Rest assured, the quality, features, and fabrication will remain the same.
® Westcott is a registered trademark. ® C-Thru is a registered trademark.
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(based on 14 reviews)
of respondents would recommend this to a friend.
Reviewed by 14 customers
Displaying reviews 1-10
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By Geeky Girl
from Potsdam, NY
Comments about Westcott/C-Thru Westcott C-Thru Protractor Ruler:
These are fantastic rulers and getting hard to find so I'm grateful to be able to buy them at Blick!!
Bottom Line Yes, I would recommend this to a friend
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from Dallas, TX
the ruler is super thin and flimsy. there was a smudged print at the bottom left end of the ruler. had high hopes for this one bec of the name. :(
Bottom Line No, I would not recommend this to a friend
I give this to all of my students.
By College Prep Math Teacher
from Oakland, CA
I teach high school math, including geometry, trigonometry, coordinate geometry (in 2- and 3-dimensions), and vector geometry. Diagrams are extremely important in these area of math, so I encourage my students to draw the most accurate diagrams possible. The challenge of creating a precise diagram is a worthy problem in itself. The 6-inch Wescott C-Thru is priced to buy in bulk, so I give one of these to every student and I encourage them to use the C-Thru ruler every chance they get. The rulers have length measurements in cm and mm, inches and eighth-inches, and angle measurements in degrees. Protractors are often made too big for the scale of a diagram that you'd create for homework. I get very accurate diagrams on a smaller scale with the Westcott's built-in protractor.
Great for geometry class with small drawings. Great price!
Students will abuse this, like all bendable rulers. The price makes it heavensent. I've been using these in class for four years and went to reorder from A-Prime two years ago. Their price almost made me quit teaching. A little work on Google and now Bilck has my business.At this price it's acceptable to go through 40 a year and write it off my taxes. Big difference - same ruler.
Replacing an old lost classic
from Nampa, ID
Use these in teaching my geometry class at a high school, lost my other one. Reason for 4 stars is one of the rulers had the printing on the face slightly of from square, so not perfect, but very close. Otherwise, this thing gets 5 stars.
the angle of things
from Grinnell. Iowa
I use to mark angles and degrees on some of my blueprints -(sketches or drawings) for the projects to be done.Being see threw makes it easier to see where you have been and where you are going with the lines to be drawn.It is a little to thin for me maybe make a thicker version of it would help.
from potsdam, newyork
it is two in one instrument in flexible plastic. good for geometry works. if the length measurements are given in color other then red, it would be great. i had little difficulty reading it,as i can't see well. even though, great math instrument
Great service and prices - again
from Madison, WI
This ruler is THE best tool for making geologic maps and cross sections.
I would buy this product again and again
from Pensacola, FL
Teachers come back to this product again and again. Blick consistently has them in stock and at a good price.
from Oakhurst, CA
I use these in my AP Physics class and they are great!!!
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