plumb line

They worked with simple plumb lines and slates for recording depths and satchels full of explosives for destroying obstacles.

When I took down the remaining wallpaper in preparation for new wallpaper, I came across all her notes, measurements and marks for plumb lines.

On either side of this isolated bar of sandstone a plumb-line might have been dropped straight to the level of the river.

Supports of dressed stone truly fixed with the plumb line are perfectly stable of themselves.

Dæd´alus is also mentioned as the inventor of the axe, plumb-line and augur.

Titiens then in a formal manner laid the first brick, using the plumb-line to ascertain that the work had been properly done.

He found a magnetic ridge line running approximately parallel to the line of no deflection of the plumb line.