"Nope, not a sardine's worth." Jon paced forth and back in the little room. "That's what has me worried. How're we going to place those other marking stakes in exactly the right spots."

"Guess we'll have to measure them some other way."

"How?"

"Darned if I know. You're the mechanically—minded one—I thought you could figure it out."

Jon continued his pacing, his young forehead creased with thought. Finally, just as their mother called them to dinner, he looked up excitedly. "Hey, it'll be easy, after all!"

"How?" Jak was as excited as his brother as they went in to the living quarters and sat down at the table.

"A light plastic line that won't stretch, exactly measured, and fastened to two metal pin-stakes. We'll make two sets, and...."

"I get it. One the length of the blocks, the other the width of the streets."

"Right. Stick a pin in the ground, measure out the line, then plant one of our regular stakes."

"Then give a yank, pull the pin out and haul it in. Then use the other set to measure the street...."