The Measurement Tools ClipArt gallery offers 97 illustrations of instruments used to determine the size of objects.

Set of boxed accessories for gage blocks. To enable the blocks to be used for different purposes, such as calipering and for height gages, a set of accessories and attachments are obtainable.

Gage Accessories

Set of boxed accessories for gage blocks. To enable the blocks to be used for different purposes, such…

Describing accurate circles and arcs with gauge blocks.

Gauge Blocks Used for Describing Circles

Describing accurate circles and arcs with gauge blocks.

A Brinell testing machine measures the indentation hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece.

Brinell Testing Machine

A Brinell testing machine measures the indentation hardness of materials through the scale of penetration…

Locating the button accurately on a plate with a micrometer.

Locating Button

Locating the button accurately on a plate with a micrometer.

One-inch direct-reading micrometer caliper.

Direct-Reading Caliper

One-inch direct-reading micrometer caliper.

Inspecting with micrometer caliper.

Inspecting Caliper

Inspecting with micrometer caliper.

This caliper was commonly used in projects that required great precision. The object of interest is placed in the opening, measured and then removed.

Mechanical Calipers

This caliper was commonly used in projects that required great precision. The object of interest is…

Measuring with a micrometer caliper.

Micrometer Caliper

Measuring with a micrometer caliper.

For very accurate measurements micrometer calipers are used.

Micrometer Caliper

For very accurate measurements micrometer calipers are used.

Inside micrometer caliper.

Micrometer Caliper

Inside micrometer caliper.

Measuring with metric micrometer caliper.

Micrometer Caliper

Measuring with metric micrometer caliper.

Two-inch standard micrometer caliper.

Standard Caliper

Two-inch standard micrometer caliper.

Thread micrometer caliper.

Thread Caliper

Thread micrometer caliper.

For very accurate measurements vernier calipers are used.

Vernier Caliper

For very accurate measurements vernier calipers are used.

Measuring with a vernier caliper.

Vernier Caliper

Measuring with a vernier caliper.

Measuring thickness of bevel gear tooth with vernier caliper.

Vernier Caliper

Measuring thickness of bevel gear tooth with vernier caliper.

Vernier Caliper.

Vernier Caliper

Vernier Caliper.

These calipers are used to measure the external size of an object. The same observations and technique apply to this type of caliper, as for the above inside caliper. With some understanding of their limitation and usage these instruments can provide a high degree of accuracy and repeatability. They are especially useful when measuring over very large distances, consider if the calipers are used to measure a large diameter pipe.

Precision Calipers and Dividers

These calipers are used to measure the external size of an object. The same observations and technique…

Using divider calipers to locate the center of stock.

Divider Calipers

Using divider calipers to locate the center of stock.

An instrument, usually resembling a pair of dividers or compasses with curved legs, for measuring the diameter or thickness of bodies, as of work shaped in a lathe or planer, timber, masts, shot, etc.

Micrometer Calipers

An instrument, usually resembling a pair of dividers or compasses with curved legs, for measuring the…

Setting outside calipers.

Outside Spring Calipers

Setting outside calipers.

Measuring with outside spring calipers.

Outside Spring Calipers

Measuring with outside spring calipers.

Setting inside calipers.

Setting Calipers

Setting inside calipers.

Outside spring calipers for measuring the outside dimensions of objects.

Spring Calipers

Outside spring calipers for measuring the outside dimensions of objects.

Inside spring calipers for measuring the inside dimensions of hollow or open objects.

Spring Calipers

Inside spring calipers for measuring the inside dimensions of hollow or open objects.

Calipering screw with thread calipers.

Thread Calipers

Calipering screw with thread calipers.

Illustration of a man using a cross-staff, a navigation tool used largely at sea. It was originally created for use in land navigation and finds latitude by measuring the distance of a star above the horizon. It cannot find longitude. The man in the drawing has the cross-staff positioned with the rod on his cheek. There is a star above him. He is wearing a wide, floppy-brimmed hat.

A Cross-Staff Used for Navigation at Sea

Illustration of a man using a cross-staff, a navigation tool used largely at sea. It was originally…

Measuring thin work with dial gauge A attached to a special, inclined stand B for quick reading. The needle of indicator C is set at zero when measuring paint D is in contact with the face of the stand. To gauge work, raise point D by lever E. Place work F under the spindle and lower point to work by releasing lever E. The reading on the dial gives the exact thickness of the disk.

Dial Gauge Used for Measuring Work

Measuring thin work with dial gauge A attached to a special, inclined stand B for quick reading. The…

Spring dividers used to compare lengths or transfer measurements from one location to another, as when used on a map and then compared to the map scale.

Spring Dividers

Spring dividers used to compare lengths or transfer measurements from one location to another, as when…

Inspecting work with adjustable limit snap-thread gage.

Adjustable Gage

Inspecting work with adjustable limit snap-thread gage.

Adjustable limit gage is used to measure the diameter of an object by adjusting screws on both sides of the U shaped gage.

Adjustable Limit Gage

Adjustable limit gage is used to measure the diameter of an object by adjusting screws on both sides…

Dial cylinder gage.

Cylinder Gage

Dial cylinder gage.

Vernier height gage.

Height Gage

Vernier height gage.

Inspecting bolt with length gage.

Length Gage

Inspecting bolt with length gage.

A device for measuring very small distances, objects, or angles, especially one based on the rotation of a finely threaded screw, as in relation to a microscope.

Micrometer Gage

A device for measuring very small distances, objects, or angles, especially one based on the rotation…

An illustration of a planer height gage for fine, or precise, work. The gage measures the object's height by moving the extended arm and fastening it with the conical pin. The height is read by the measuring stick attached to the arm.

Planer Height Gage

An illustration of a planer height gage for fine, or precise, work. The gage measures the object's height…

Counting threads with screw-pitch gage.

Screw-Pitch Gage

Counting threads with screw-pitch gage.

Adjustable thread limit snap gage. A snap gage is a form of Go/no go gauge. It is a limit gage with permanently or temporarily fixed measurement aperture(s) (gaps) which is used to quickly verify whether an outside dimension of a part matches a preset dimension or falls within predefined tolerances.

Snap Gage

Adjustable thread limit snap gage. A snap gage is a form of Go/no go gauge. It is a limit gage with…

Testing shoulder distance with tail gage.

Tail Gage

Testing shoulder distance with tail gage.

Standard wire gage.

Wire Gage

Standard wire gage.

Caliper gages.

Caliper Gages

Caliper gages.

Set of standard thickness or feeler gages.

Feeler Gages

Set of standard thickness or feeler gages.

Testing center distance with vernier and plug gages.

Plug Gages

Testing center distance with vernier and plug gages.

Set of standard fillet and radius gages.

Radius Gages

Set of standard fillet and radius gages.

A carpenter's tool used for guaging to a width.

Gauge

A carpenter's tool used for guaging to a width.

Cleaning the surface of a gauge block held in right hand.

Cleaning Surface of Gauge Block

Cleaning the surface of a gauge block held in right hand.

Set of Johansson combination gauge blocks used for calibration and checking the accuracy of gauges.

Gauge Blocks

Set of Johansson combination gauge blocks used for calibration and checking the accuracy of gauges.

Cleaning the surface of a gauge block held in the left hand.

Gauge Blocks

Cleaning the surface of a gauge block held in the left hand.

Joining two gauge blocks by sliding the surfaces together.

Joining Two Gauge Blocks

Joining two gauge blocks by sliding the surfaces together.

"Bisecting gage, a gage formed by a bar carrying two heads or cheeks connected by two arms of equal length, forming a toggle-joint, at which a pencil or scribe-awl is placed. The pencil or awl is thus at equal distances from the cheeks at whatever gage they may be set." -Whitney, 1911

Bisecting Gauge

"Bisecting gage, a gage formed by a bar carrying two heads or cheeks connected by two arms of equal…

Inspecting small parts with "go" and "no-go" gauges.

Go No Go Gauge

Inspecting small parts with "go" and "no-go" gauges.

Testing "go" end of a limit plug gauge.

Plug Gauge

Testing "go" end of a limit plug gauge.

Testing adjustable limit snap gauge with combination gauge blocks.

Snap Gauge

Testing adjustable limit snap gauge with combination gauge blocks.

Gaging work with prestometer or fluid gage.

Gauging Work

Gaging work with prestometer or fluid gage.

Universal dial test indicator used to take fine measurements during inspections of parts.

Test Indicator

Universal dial test indicator used to take fine measurements during inspections of parts.

Dial test indicator for checking the height of objects.

Test Indicator

Dial test indicator for checking the height of objects.

Inspecting small parts with gauges fastened to bench.

Inspecting Small Parts

Inspecting small parts with gauges fastened to bench.

Measuring work in a lathe with a micrometer.

Measuring Lathe

Measuring work in a lathe with a micrometer.

"The map measurer is an instrument specially designed for quickly measuring distances or lines on a map. It consists of a dial case, handle, and a small wheel or roller." -U.S. Chief of Engineers

Map Measurer

"The map measurer is an instrument specially designed for quickly measuring distances or lines on a…

A marking gauge is used in woodworking and metalworking to mark out lines for cutting or other operations. In metalworking it can be known as a scratch gauge. The purpose of the gauge is to scribe a line parallel to a reference edge or surface. It is used in joinery and sheetmetal operations.

Marking Gauge

A marking gauge is used in woodworking and metalworking to mark out lines for cutting or other operations.…