Millwright Level 1: Basic Layout (15104-
06)
Prick Punches - Answer-Made of steel and is about 4 to 6 inches long, used with small
hammer to mark centers and to mark centers and to make small indentations along
layout lines. The end of the punch to a point with an angle of about 60-degrees.
Steel Rules - Answer-Made of tempered steel that has graduations down to 1/64 of an
inch. Some steel rules are marked on both sides. One side may be marked in eighths
and sixteenths of an inch, the other side in thirty-seconds and sixty-fourths of an inch.
They are available in lengths from 1 to 144 inches. They are used to measure distances
and to mark lines.
Scribing Perpendicular Lines to Base Lines Using Squares - Answer-Use a framing
square and straightedge.
-locate and scribe a base line
-align the straightedge with the base line
-clamp the straightedge firmly to the material
-place the blade of the framing square against the straightedge
-scribe a line along the tongue of the square
-move the framing square a specified distance along the straightedge, and scribe
another.
Combination Set - Answer-Can be used as a combination square to lay out 45-degree
angles, 90-degree angles, parallel lines and to measure heights. It can be used as a
protractor to measure angle to within 1-degree accuracy or it can be used to locate
centers of round or square bars and serve as a steel rule, level, or marking gauge.
Protractors - Answer-Made of plastic or light-gauge metal, used to lay out and measure
angles.
Basic Layout - Answer-This includes measuring and marking lines, centers, angles, and
circles to lay out shapes for fabrication, bolt patterns, and equipment locations.
Dividers - Answer-Made of hardened steel points attached to two legs, used to transfer
measurements, compare distances, and to scribe circles and arcs.
Trammel Points - Answer-Used to scribe large circles and arcs. The point on a trammel
can be replaced with a marking tool such as a pen.
06)
Prick Punches - Answer-Made of steel and is about 4 to 6 inches long, used with small
hammer to mark centers and to mark centers and to make small indentations along
layout lines. The end of the punch to a point with an angle of about 60-degrees.
Steel Rules - Answer-Made of tempered steel that has graduations down to 1/64 of an
inch. Some steel rules are marked on both sides. One side may be marked in eighths
and sixteenths of an inch, the other side in thirty-seconds and sixty-fourths of an inch.
They are available in lengths from 1 to 144 inches. They are used to measure distances
and to mark lines.
Scribing Perpendicular Lines to Base Lines Using Squares - Answer-Use a framing
square and straightedge.
-locate and scribe a base line
-align the straightedge with the base line
-clamp the straightedge firmly to the material
-place the blade of the framing square against the straightedge
-scribe a line along the tongue of the square
-move the framing square a specified distance along the straightedge, and scribe
another.
Combination Set - Answer-Can be used as a combination square to lay out 45-degree
angles, 90-degree angles, parallel lines and to measure heights. It can be used as a
protractor to measure angle to within 1-degree accuracy or it can be used to locate
centers of round or square bars and serve as a steel rule, level, or marking gauge.
Protractors - Answer-Made of plastic or light-gauge metal, used to lay out and measure
angles.
Basic Layout - Answer-This includes measuring and marking lines, centers, angles, and
circles to lay out shapes for fabrication, bolt patterns, and equipment locations.
Dividers - Answer-Made of hardened steel points attached to two legs, used to transfer
measurements, compare distances, and to scribe circles and arcs.
Trammel Points - Answer-Used to scribe large circles and arcs. The point on a trammel
can be replaced with a marking tool such as a pen.
