Job 38:5 | NET2full | STEP | Who set its measurements — if you know — or who stretched a measuring line across it?

‏ Job 38:5

5 Who set its measurements—if ^{▼▼tn The particle כִּי (ki) is taken here for a conditional clause, “if you know” (see GKC 498 §159.dd). Others take it as “surely” with a biting irony.} you know—
or who stretched a measuring line across it?