If you must mark your IP on the protractors
, do it only on the back of the prottracttor.
The AccuAngle(TM) color protractor
was designed by DuPont color researchers and is molded in DuPont(TM) Delrin(R) acetal resin at the company's engineering plastics laboratory in Troy, Mich.
Have a partner line up the protractor
with the edge of the cardboard to record the incline at which the snowpack begins to slide.
Holding the protractor
at your desired angle, look up the straight edge of the protractor
A bench-top optical device that uses projection screen image coupled with a protractor
device to obtain the reading, the contact angle meter allows more than one person to observe the droplet and read the measurements, according to the company.
At this point, students can either freehand parallel lines or use a protractor
or a right triangle.
She also exchanged the protractor
and ruler for scissors and paper.
This model is a benchtop optical device that uses projection screen image coupled with a protractor
device to obtain the reading.
OR - Optionally, a durable plastic circular protractor
and tenths of an inch and millimeters ruler for another $2.
Using the $250,000 electron microscope and a 25-cent protractor
, two of the lab's scientists discovered a structural difference between the ivory of modern Asian and African elephants (banned) and that of prehistoric mastodons and mammoths (legal).
Among the tools taken during the incident was an 18v Stanley drill, a sliding protractor
and an Argos circular saw.
Creating Circular Art is a hands-on, how-to DVD guide to creating art based on drawing circles with a protractor