Dial Indicator also known as

Work very well when measuring tiny variations in the flatness or height of an inspected part. With a surface plate and height stand the part or dial test indicator can moved around to gage the consistency of a measurement.

are instruments used to accurately measure small linear distances, and are frequent used in industrial and mechanical processes. They are named so because the measurement results are displayed in a magnified way by means of a dial.

Dial indicators, are generally available in two types:

The continuous type, numbered clockwise is available in two types:

it has only about 2 ½ revolutions of travel. It is generally used for comparison measurement and set-up purposes

is often used to indicate table travel or cutting tool movement on machine tools

have the spindle at right angles to the dial. They are used extensively in setting up lathe work and for machine table alignment

Distance from point on one screwthread to corresponding point on very next screwthread

have the spindle at right angles to the dial. They are used extensively in setting up lathe work and for machine table alignment

A special variety of the dial indicator is the ________________ which is primarily used in machine setups. The ____ measures displacement at an angle of a lever or plunger perpendicular to the axis of the indicator A regular ******** measures linear displacement along that axis.

A dial test indicator, also known as a ______

To check for run out when fitting a new disc to an automotive disc brake. Run out can rapidly ruin the disc if it exceeds the specified tolerance

In various contexts of science, technology, and manufacturing (________)

is any of various instruments used to accurately measure small distances and angles, and amplify them to make them more obvious.

The name comes from the concept of ________ to the user that which their naked eye cannot discern; such as the presence, or exact quantity, of some small distance (for example, a small height difference between two flat surfaces, a slight lack of __________ between two cylinders, or other small physical deviations).

The classic mechanical version, called a dial indicator, provides a _______ display similar to a clock face with clock hands; the hands point to graduations in a circular scales on the dial which represent the distance of the probe tip from a zero setting.

The internal works of a mechanical dial indicator are similar to the precision clockworks of a mechanical wristwatch, employing a __________ gear to read the probe position, instead of a pendulum _________ to read time.

Since the mechanisms are necessarily delicate, rugged framework construction is required to perform reliably in harsh applications such as ___________ metalworking operations, similar to how wristwatches are ruggedized

has a plunger and reads how far the plunger is raised by the surface below.

has an arm that sweeps an angle. It measures how far the arm is pushed sideways. Both are handy, but you'll tend to use a ____________ more often

It's often convenient to use a Dial Indicator with a _____________. The stand will secure the indicator where it's needed and a fine adjustment lets you zero the indicator.

environment to check for consistency and accuracy in the manufacturing process.

On the ________ to initially set up or calibrate a machine, prior to a production run.

By _________ (such as _______) in the process of manufacturing precision tooling

In metal _________ workshops, where a typical application is the centering of a _______ workpiece in a four jaw chuck. The dial indicator is used to indicate the run-out (the misalignment between the workpiece's axis of rotational symmetry and the axis of rotation of the spindle) of the workpiece, with the ultimate aim of reducing it to a suitably small range using small chuck jaw adjustments.

In areas other than manufacturing where accurate measurements need to be recorded (e.g.. _______)

To check for ------ run-out when affixing a new rotor to an automotive -------

distance screw thread advances axially in one revolutions

on thimble lines up with the index line on the sleeve or barrel

thimble has __ equal division