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…

The bushel, a unit of dry measure.

Bushel

The bushel, a unit of dry measure.

One-inch direct-reading micrometer caliper.

Direct-Reading Caliper

One-inch direct-reading micrometer caliper.

Measuring with a micrometer caliper.

Micrometer Caliper

Measuring with a micrometer caliper.

Measuring with metric micrometer caliper.

Micrometer Caliper

Measuring with metric micrometer caliper.

Measuring with a vernier caliper.

Vernier Caliper

Measuring with a vernier caliper.

Vernier Caliper.

Vernier Caliper

Vernier Caliper.

Calipers used to take measurements; using compasses with curved legs, for measuring the diameter, of round bodies.

Calipers

Calipers used to take measurements; using compasses with curved legs, for measuring the diameter, of…

Setting outside calipers.

Outside Spring Calipers

Setting outside calipers.

Measuring with outside spring calipers.

Outside Spring Calipers

Measuring with outside spring calipers.

"To find the number of bushels of grain in a bin or box, multiply the length in feet by the height in feet, then by the width in feet and then by 8. For instance. In a bin 10 feet long, 6 feet high and 8 feet wide, 10 x 8 x 6 x 8 = 384." -Foster, 1921

Capacity

"To find the number of bushels of grain in a bin or box, multiply the length in feet by the height in…

Illustration comparing the fundamental units of measure quart and liter.

Comparison Of Units Of Capacity

Illustration comparing the fundamental units of measure quart and liter.

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…

Illustration comparing the fundamental units of measure 1 cubic yard and 1 cubic meter.

Comparison Of Units Of Cubic Measure

Illustration comparing the fundamental units of measure 1 cubic yard and 1 cubic meter.

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…

Dial cylinder gage.

Cylinder Gage

Dial cylinder 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…

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.

Testing adjustable limit snap gauge with combination gauge blocks.

Snap Gauge

Testing adjustable limit snap gauge with combination gauge blocks.

"Goniometer. An instrument for measuring solid angles, or the inclination of planes, particularly the angles formed by the faces of crystals." -Whitney, 1911

Hand Goniometer

"Goniometer. An instrument for measuring solid angles, or the inclination of planes, particularly the…

"Goniometer. An instrument for measuring solid angles, or the inclination of planes, particularly the angles formed by the faces of crystals." -Whitney, 1911

Reflection Goniometer

"Goniometer. An instrument for measuring solid angles, or the inclination of planes, particularly the…

"Gyroscope. Gyroscopic top, an instrument consisting of a heavy fly-wheel revolving about an axis one point of which is fixed, but which is otherwise free to move in any way." -Whitney, 1911

Gyroscope

"Gyroscope. Gyroscopic top, an instrument consisting of a heavy fly-wheel revolving about an axis one…

"Foucault's Gyroscope. GYROSCOPE. An instrument consisting of a fly-wheel, the axis of which can turn freely in any direction, designed to illustrate the dynamics of rotating bodies." -Whitney, 1911

Foucault's Gyroscope

"Foucault's Gyroscope. GYROSCOPE. An instrument consisting of a fly-wheel, the axis of which can turn…

"Gyrostat. An instrument for illustrating the dynamics of rotation, composed of a box or case having a sharp bearing-edge in the form of a regular polygon, and containing a fly-wheel having its center and its direction of rotation in the plane of the bearing-edge." -Whitney, 1911

Gyrostat

"Gyrostat. An instrument for illustrating the dynamics of rotation, composed of a box or case having…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lengths of lines a and b are the same. You would need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lengths of lines a and b are the same. You would need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lengths of lines a and b are the same. You would need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lengths of lines a and b are the same. You would need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lines are the same distance apart. You may need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lines are the same distance apart. You may need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lines are prolongations of the other lines. You may need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the lines are prolongations of the other lines. You may need to measure to be sure of your conclusion.

Optical Illusions

Illustration showing optical illusions. It is not always possible to trust the eye to be sure if the…

Illustration that uses triangles to measure the distance across a lake.

Using Triangles To Measure A Lake

Illustration that uses triangles to measure the distance across a lake.

Illustration that uses triangles to measure the distance across a lake.

Using Triangles To Measure A Lake

Illustration that uses triangles to measure the distance across a lake.

Measuring work in a lathe with a micrometer.

Measuring Lathe

Measuring work in a lathe with a micrometer.

Illustration of 2 children measuring liquids in pints and quarts. It can be used to write mathematics story problems involving measurement.

Children Measuring Liquid

Illustration of 2 children measuring liquids in pints and quarts. It can be used to write mathematics…

An illustration of the concave of a meniscus.

Concave of Meniscus

An illustration of the concave of a meniscus.

An illustration of the convex of a meniscus.

Convex of Meniscus

An illustration of the convex of a meniscus.

Gear tooth depth micrometer.

Depth Micrometer

Gear tooth depth micrometer.

Reading a micrometer.

Reading a Micrometer

Reading a micrometer.

The peck, a unit of dry measure.

Peck

The peck, a unit of dry measure.

Illustration of a child with 8 quarts and 1 peck. He is using the baskets to practice measuring. It can be used to write mathematics story problems involving addition, subtraction, money, measurement, and counting.

Child Measuring Using Pecks And Quarts

Illustration of a child with 8 quarts and 1 peck. He is using the baskets to practice measuring. It…

A protractor to measure angles and degrees.

Protractor

A protractor to measure angles and degrees.

A protractor is a semicircular tool for measuring angles in degrees.

Protractor

A protractor is a semicircular tool for measuring angles in degrees.

A protractor indicating a measurement of 10 degrees.

Protractor, 10 Degrees

A protractor indicating a measurement of 10 degrees.

A protractor indicating a measurement of 10 degrees from the right side.

Protractor, 10 Degrees

A protractor indicating a measurement of 10 degrees from the right side.

A protractor indicating a measurement of 100 degrees.

Protractor, 100 Degrees

A protractor indicating a measurement of 100 degrees.

A protractor indicating a measurement of 100 degrees from the right side.

Protractor, 100 Degrees

A protractor indicating a measurement of 100 degrees from the right side.

A protractor indicating a measurement of 105 degrees.

Protractor, 105 Degrees

A protractor indicating a measurement of 105 degrees.

A protractor indicating a measurement of 105 degrees from the right side.

Protractor, 105 Degrees

A protractor indicating a measurement of 105 degrees from the right side.

A protractor indicating a measurement of 110 degrees.

Protractor, 110 Degrees

A protractor indicating a measurement of 110 degrees.

A protractor indicating a measurement of 110 degrees from the right side.

Protractor, 110 Degrees

A protractor indicating a measurement of 110 degrees from the right side.

A protractor indicating a measurement of 115 degrees.

Protractor, 115 Degrees

A protractor indicating a measurement of 115 degrees.

A protractor indicating a measurement of 115 degrees from the right side.

Protractor, 115 Degrees

A protractor indicating a measurement of 115 degrees from the right side.

A protractor with 120 and 60 degree suplementary angles indicated.

Protractor, 120 and 60 Degrees

A protractor with 120 and 60 degree suplementary angles indicated.

A protractor indicating a measurement of 120 degrees.

Protractor, 120 Degrees

A protractor indicating a measurement of 120 degrees.

A protractor indicating a measurement of 120 degrees from the right side.

Protractor, 120 Degrees

A protractor indicating a measurement of 120 degrees from the right side.

A protractor indicating a measurement of 125 degrees.

Protractor, 125 Degrees

A protractor indicating a measurement of 125 degrees.

A protractor indicating a measurement of 125 degrees from the right side.

Protractor, 125 Degrees

A protractor indicating a measurement of 125 degrees from the right side.

A protractor indicating a measurement of 130 degrees.

Protractor, 130 Degrees

A protractor indicating a measurement of 130 degrees.