about
free
exclusive
patterns
vector
microstock
premium
log in
sign up
about
free
exclusive
patterns
vector
microstock
premium
log in
sign up
Pencil and a slide rule on the old page with the calculations in mechanics
Keywords:
education
blueprint
pencil
diagram
plan
ruler
science
paper
sketch
formula
mathematics
engineering
learning
Select...
photo, drag here or paste
How to get an image URL
Right-click an image on the web and copy the image’s URL. Return to the search box and paste in the URL (Ctrl+V or Command+V).
By staying on our site, you agree to our use of cookies. Read more in the
cookie policy