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

Using Triangles To Measure A River

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

An instrument with straight edges or sides, for drawing lines; a rule.

Ruler

An instrument with straight edges or sides, for drawing lines; a rule.

English ruler with half inch markings.

Half Inch Ruler

English ruler with half inch markings.

English ruler with inch markings.

Inches Ruler

English ruler with inch markings.

Metric ruler.

Metric Ruler

Metric ruler.

English ruler with quarter inch markings.

Quarter Inch Ruler

English ruler with quarter inch markings.

Six inch ruler with half inch markings.

Six Inch Ruler

Six inch ruler with half inch markings.

Six inch ruler with quarter inch markings.

Six Inch Ruler

Six inch ruler with quarter inch markings.

Six inch ruler with inch markings.

Six Inch Ruler

Six inch ruler with inch markings.

Illustration of a child measuring with rulers that can be used to write mathematics story problems involving comparison, measurement, etc.

Child Holding Rulers

Illustration of a child measuring with rulers that can be used to write mathematics story problems involving…

Illustration of two children holding rulers that can be used to write mathematics story problems involving comparison, taller, shorter, highest, lowest, etc.

Children Holding Rulers

Illustration of two children holding rulers that can be used to write mathematics story problems involving…

Illustration of children holding rulers that can be used to write mathematics story problems involving comparison, taller, shorter, highest, lowest, etc.

Children Holding Rulers

Illustration of children holding rulers that can be used to write mathematics story problems involving…

Scales found at Pompeii

Scales

Scales found at Pompeii

Scales used for coining.

Scales

Scales used for coining.

Five students are learning how to use scales to measure a book. They have balanced the book with some weights.

Children Using Scales

Five students are learning how to use scales to measure a book. They have balanced the book with some…

Transferring a setting between inside calipers and outside calipers.

Transfer Setting with Calipers

Transferring a setting between inside calipers and outside calipers.

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

Comparison Of Units Of Square Measure

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

Illustration of steel square.

Steel Square

Illustration of steel square.

Illustration of steel square with hypotenuse drawn.

Steel Square

Illustration of steel square with hypotenuse drawn.

Illustration of steel square with bevel/slant.

Steel Square

Illustration of steel square with bevel/slant.

An instrument for indicating the pressure of the steam in a boiler.

Steam-gauge

An instrument for indicating the pressure of the steam in a boiler.

Illustration showing a survey on the lake front in Chicago with distances and angle measures shown.

Survey of Lake Front in Chicago

Illustration showing a survey on the lake front in Chicago with distances and angle measures shown.

"An instrument much employed in land-surveying for the measurement of angles horizontal and verticle." — Chambers, 1881

Theodolite

"An instrument much employed in land-surveying for the measurement of angles horizontal and verticle."…

For the builder or architect who wants to raise the standard of his work- who takes conspicuous pride in the accuracy of his efforts, this transit is especially designed.

Builders Transit

For the builder or architect who wants to raise the standard of his work- who takes conspicuous pride…

Illustration comparing the fundamental units of measure ounces to grams and pounds to kilograms.

Comparison of Units of Weight

Illustration comparing the fundamental units of measure ounces to grams and pounds to kilograms.

Measuring work on bench with micrometer.

Measuring Work

Measuring work on bench with micrometer.