plumb line

noun 0.823

plumb

noun 0.768

spirit level

noun 0.592

plumbago

noun 0.576

bob

noun 0.568

plumber

noun 0.564

dowsing rod

noun 0.563

plummet

noun 0.559

plunger

noun 0.552

pluming

noun 0.543

clinometer

noun 0.542

plum tree

noun 0.538

gimlet

noun 0.532

plumbism

noun 0.531

simple pendulum

noun 0.529

plinth

noun 0.527

bobbing

noun 0.524

ballcock

noun 0.520

divining rod

noun 0.518

plumbing

noun 0.518

pendulum

noun 0.516

bobbin

noun 0.514

plummeting

noun 0.512

inclinometer

noun 0.511

bobble

noun 0.510

theodolite

noun 0.506

bobber

noun 0.506

protractor

noun 0.504

two bob

noun 0.502

bobblehead

noun 0.501