Procedures for Centering an Instrument The procedures for centering an instrument over a point will vary depending on whether the instrument uses a plumb bob
or an optical plummet.
sod-cutting spade stakes, layout line and line level plumb bob
protractor and pencil measuring tape right angle carpenter's angle crosscut saw hammer and 3" and 1 1/2 galvanized nails cordless drill/driver and 3" deck screws 8' to 12' step ladder or scaffolding roofing cement paint and brush
Optical centring has been replaced by a conventionally suspended plumb bob
with a dual precision option.
A lead plumb bob
from Cataractonium gives evidence for construction methods used within the town and was perhaps even used in the construction of Dere Street and other Roman roads at the site, giving us an insight into the engineering technologies of the time.
Bitter was specially brewed and bottled for Aedis Group and will be spreading festive cheer to the firm's clients up and down the country.
A spirit-level, a plumb bob
and St John the Baptist
Winters here works intuitively, producing figures resembling the parabolic form known as the Lissajous curve as well as "Turk's head" and other decorative knots and the path a plumb bob
cuts through space as it seeks stasis, ultimately pointing to the earth's core.
Hang a plumb bob
($6) from each corner of the frame to locate footings (similar to Photo 2).
A plumb bob
or plumb line is a small, tapered, pointed weight suspended from cord.
Start by getting all your equipment together: wallpaper paste, bucket and wide brush, paper-hanging scissors and sponge, pasting table, plumb bob
or spirit level, steel ruler and pencil, steps, tape measure and a trimming knife.
Using a conventional plumb bob
and tape measure would require two or three installers, working together to coordinate the design layout on the floor with measurements of the ceiling that will support the equipment.
Alexander's Lure is a 10-foot-tall, 280-pound ovoid, suspended by a chain and looking, says Scaled Composites Vice President Mike Melvill, like ``a big plumb bob