The phrase "perfect parallel" means something that is exactly the same or very similar to something else, with no differences or deviations. Full definition
In terms of tech there's a new Parking Assistance package that takes control of acceleration, braking, gear selection and steering to effect perfect parallel parks every time. (motoring.com.au)
In one series of five large works, a flat layer painted in the fashion of wood grain is overlaid with a contrasting layer of built - up oil in perfect parallel lines. (artfcity.com)
The Gazette article linked above demonstrates the near perfect parallels with incidents when we were kids, and before. (slaw.ca)