plumb lines

@leaspeed6 leveling up!

“I have some engineering friends and they want all scopes perfectly level and uncanted. Using a @badgerordnance “dead zero” scope leveling tool with rail, you can perfectly level a scope with mounts using its built-in bubble level and fine adjustments. Then you look through scope at a plumb line or other vert/horiz point of reference and rotate your scope so there is no cant in reticle. In this case, we looked out back of kitchen to reference lines taped to backyard wall. You can do this directly on the rifle as well if you level that but it can be a lot trickier. This is also a good time to mount a level to the scope for when you are out shooting, as you know it will be perfectly aligned without cant. I found this pretty interesting of a process!”

Home, Chapter 3

AUTHOR: Losille2000
GENRE: Romance/Drama
FIC SUMMARY: Tom returns home grouchy and exhausted from a cramped flight after four months away for work. Unfortunately, there’s already someone sleeping in his bed.
RATING: M (sex, language)
AUTHORS NOTES: Thanks for reading and your comments!

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“perpendicular” comes to english from (middle french from old french from) latin perpendiculum meaning “plumb line”, where perpendo means “i weigh”, pendo means “i suspend”.

“orthogonal” comes to english from (french from medieval latin from latin from) ancient greek ὀρθογώνιος which means “rectangular”. ὀρθός means “straight” or “upright”, and γωνία means “angle”. the noun form of this word initially meant rectangle, then changed meaning to right triangle, then eventually came to refer to a right angle.

the former is a physical characterization, while the latter is more of a mathematical characterization.