מִשְׁקֶלֶת mishqeleth (H4949)

a weight, i.e. a plummet (with line attached)

1) level, levelling tool or instrument, plummet

or מִשְׁקֹלֶת; feminine of מִשְׁקָל (H4948) or מַשְׁקוֹף (H4947);