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An illustration of enlarging an image by using squares. This proportion method is done by using squares to resize the image.

Enlargement of Image by Squares

An illustration of enlarging an image by using squares. This proportion method is done by using squares…

A convenient screw cutting using a lathe to create threads on the metal rod.

Screw Cutting Device using Lathe

A convenient screw cutting using a lathe to create threads on the metal rod.

The shaping machine used to cut triple threads on a screw viewed from a lengthwise axial section.

Cutting Triple Worms Screw

The shaping machine used to cut triple threads on a screw viewed from a lengthwise axial section.

A boring tool to create a large diameter hollow center of the cylinder.

Large Boring Tools

A boring tool to create a large diameter hollow center of the cylinder.

The illustration showing a large boring tool for heavy work to create a cylinder with 10 inch diameter and 9.25 inch thick wall.

Large Boring Tool for Heavy Work

The illustration showing a large boring tool for heavy work to create a cylinder with 10 inch diameter…

The device used to create spheres by rotating the ball and mandrel to create an equal diameter. The wire is connected to the top and the wheel while spinning.

Device for Turning Sphere

The device used to create spheres by rotating the ball and mandrel to create an equal diameter. The…

An illustration showing how to create a centrifugal governor ball rotating the lathe. The ball is used for a counter weights on the engine to regulating fuel supply to control speed.

Device Turning Metal Centrifugal Governor Ball

An illustration showing how to create a centrifugal governor ball rotating the lathe. The ball is used…

An illustration of creating spirals on a steel rod using mandrel and lathe. The spiral is created by revolving the steel rod on the lathe while placing a mandrel on the rod at an angle.

Spiral Turning Device

An illustration of creating spirals on a steel rod using mandrel and lathe. The spiral is created by…

The illustration shows a set up to turn irregular shaped materials using an ordinary lathe. The lathe is attached to the gear with a belt, where the gear turns the object in the tool holder.

Turning Irregular Shaped Materials using Ordinary Lathe

The illustration shows a set up to turn irregular shaped materials using an ordinary lathe. The lathe…

A spiral milling apparatus for a lathe to create drills and flutes. The working surface is fastened to the lathe by the bolt on the left. While the rod is spinning, a spindle is inserted in a hole at a desired angle.

Spiral Milling Lathe

A spiral milling apparatus for a lathe to create drills and flutes. The working surface is fastened…

"Where the lathe has no special taper turning attachment, the rig here described can readily be made and applied. The hand wheel of the cross feed is removed, and replaced by a hard—wood disk S that has a rim groove for a stout cord A. One end of this cord is attached to the tail stock at B, by means of a bent metal strip D. The conicity or degree of taper will be determined by the diameter of the disk S." —Grimshaw, 1902

Taper Turning and Boring Lathe Rig

"Where the lathe has no special taper turning attachment, the rig here described can readily be made…

A lathe for turning wood to create a hole by fastening the material on to the faceplate.

Lathe, Wood Turning

A lathe for turning wood to create a hole by fastening the material on to the faceplate.

A volute or flat spiral turning machine. The spiral patterns are created by cutting the wood adjusting the blade while rotating the wood with the lathe.

Turning Volute or Flat Spiral Machine

A volute or flat spiral turning machine. The spiral patterns are created by cutting the wood adjusting…

A lathe tool attachment for cutting a pulley in two or create grooves. The arm with the spinning tool extends to the wheel while it is spinning.

Pulley Cutting Tool

A lathe tool attachment for cutting a pulley in two or create grooves. The arm with the spinning tool…

An accurate hole making tool by a centring tool, held by a screw, is pushed down onto the material while the lathe is running.

Combined Centring and Countersinking Tool

An accurate hole making tool by a centring tool, held by a screw, is pushed down onto the material while…

A cast iron hub with teeth inserted spirally attached to a mandrel to create a gear.

Sectional Milling Cutters with Inserted Teeth Tool

A cast iron hub with teeth inserted spirally attached to a mandrel to create a gear.

"Where pins or studs that are in place are to be milled on their ends as well as on their circumference, and where great accuracy in diameter and length are required, the best tool to use is that here shown." —Grimshaw, 1902

Hollow Mill for Pins

"Where pins or studs that are in place are to be milled on their ends as well as on their circumference,…

A milling ball bearing to create a small circular hole, as shown in (A). The milling ball bearing has a spherical tip with groves creating holes.

Milling Ball Bearings

A milling ball bearing to create a small circular hole, as shown in (A). The milling ball bearing has…

"The workpiece is fastened on a round platen, which in turn is attached to the table of a large and heavy vertical boring machine. The mill arbor bears a profile mill with inserted teeth, and the table has power feed. The operation is cheaper than turning in the lathe." —Grimshaw, 1902

Ring Milling

"The workpiece is fastened on a round platen, which in turn is attached to the table of a large and…

A shaper micrometer scale measuring cross—feed spindle to measure the diameter by reading the raised ruler.

Shaper Spindle Micrometer Scale

A shaper micrometer scale measuring cross—feed spindle to measure the diameter by reading the raised…

A shaper micrometer scale by clamping onto the material to measure the thickness reading the rotation dial at (C).

Shaper Clamp Micrometer Scale

A shaper micrometer scale by clamping onto the material to measure the thickness reading the rotation…

A tool used to make holes in metal cylindrical bearing surface, or bushings. The holes are created by adjusting the latch at the end to move the bushing lengthwise while turning.

Bushing Radial Hole Boring Tool

A tool used to make holes in metal cylindrical bearing surface, or bushings. The holes are created by…

"For brass or other soft metals there may be used with advantage a twist drill as shown. The cutting edges of the drill are ground straight and in line with the body of the drill for a distance of 0.03 to 0.06 in. = 0.8 to 1.6 mm. This prevents the breaking of the drill when it goes through the work—piece." —Grimshaw, 1902

Twist Drills for Brass

"For brass or other soft metals there may be used with advantage a twist drill as shown. The cutting…

A micrometer depth gage used to measure irregular holes in narrow boring. The gage measures the holes by inserting the rod into the gage while the pointer measures the bore.

Depth Micrometer Gage

A micrometer depth gage used to measure irregular holes in narrow boring. The gage measures the holes…

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…

A convenient bench vise used to hold a plate or an object in place while working, attached to a table or work bench. The object being work on is put in place by adjusting the hand screw.

Convenient Bench Vise

A convenient bench vise used to hold a plate or an object in place while working, attached to a table…

A stepped hole punch tool used to make holes in metal plates. The plate (B) is placed under the grip (K), and the hole is made by pushing (G) to the metal to the desired diameter determined by the steps.

Stepped Hole Punch Tool

A stepped hole punch tool used to make holes in metal plates. The plate (B) is placed under the grip…

"A pneumatic shifter moves the belt rapidly in either direction, holds it where it is put, and stays in any wished—for intermediate position." —Grimshaw, 1902

Pneumatic Belt Shifter

"A pneumatic shifter moves the belt rapidly in either direction, holds it where it is put, and stays…

"The belt is thrown on to set the machine in motion, the loose pulley is pressed aside by the spiral springs on the bolts, its rim entirely touches that of the fast pulley and helps to set this latter in motion by friction." —Grimshaw, 1902

Loose Driving Pulley

"The belt is thrown on to set the machine in motion, the loose pulley is pressed aside by the spiral…

The hardening process for drop hammer dies is done by containing the hardening liquid, usually water, is contained in a containment vessel. The liquid is pumped into the container to cool the metal.

Hardening Dies for Drop Hammers

The hardening process for drop hammer dies is done by containing the hardening liquid, usually water,…

A rusted nut is removed by splitting it with a cold chisel by placing the chisel along the fiber it wiill split easily.

Removing Rusted Nuts using Chisel

A rusted nut is removed by splitting it with a cold chisel by placing the chisel along the fiber it…

"The hack saw frame which is here illustrated is intended to use blades of various lengths, especially those the ends of which have been broken off. The advantage of being able to use on very wide articles pieces of a broken band saw is apparent to any one who considers the thing a moment." — Grimshaw, 1902

Adjustable Hacksaw Frame

"The hack saw frame which is here illustrated is intended to use blades of various lengths, especially…

"In order to get the best results from the tool the pressure on the handle should always be in the direction of the arrow shown above the latter, so as to put the pressure on the jaws at the points B and C, and not at D and E." —Grimshaw, 1902

Adjustable Wrench

"In order to get the best results from the tool the pressure on the handle should always be in the direction…

"Where the head is movable, the pivot should be quit large, and the hole in which it plays be bushed with metal; the washers must be large, and the clamp screws of hard metal, with deep threads and unreliable." —Grimshaw, 1902

Taper Head Adjustable T Square Side and Front View

"Where the head is movable, the pivot should be quit large, and the hole in which it plays be bushed…

A front and side view of a t square with rectangular head. The t square is used draw straight lines using the blade in mechanical drawing.

Fixed Rectangular Head T Square

A front and side view of a t square with rectangular head. The t square is used draw straight lines…

"To enable the drawing of long parallel, the head must have been a long contact surface with the edge of the board. It must also be wide enough to hold the blade stiffly." —Grimshaw, 1902

Fixed Triangular Head T Square

"To enable the drawing of long parallel, the head must have been a long contact surface with the edge…

"Where the square has a fast and a loose head, the blade should be mortised into the fixed one and the nut and thumb screw arranged as shown; the movable swivel head being used the least." —Grimshaw, 1902

Adjustable Rectangular Head T Square

"Where the square has a fast and a loose head, the blade should be mortised into the fixed one and the…

"Use the T square and 45 degree triangle to divide the square as indicated, the size of the small squares being ½". This is an excellent test of precision in measurement and lining. Care must be observed in the inking of this figure to allow each line to dry before inking the next one." —Anthony, 1904

Drawing Diagonal Lines with T Squares and Triangle

"Use the T square and 45 degree triangle to divide the square as indicated, the size of the small squares…

A diagonal line pattern drawing exercise in for T square and triangle. The image is constructed by dividing the paper into squares with the T square, and the diagonal lines are drawn using a 45 degree triangle.

Drawing Exercise for Drawing Diagonal Line Pattern using T Square and Triangle

A diagonal line pattern drawing exercise in for T square and triangle. The image is constructed by dividing…

The construction of a star with square overlapping each other using a triangle and T square. This image is drawn by dividing the paper with dashed lines using T square. Using the 45 degree triangle, draw diagonal lines to create the star and the star.

Constructing Star and Box Overlap Pattern using T Square and Triangle

The construction of a star with square overlapping each other using a triangle and T square. This image…

A problem exercise to construct a star overlapping square using a triangle and T square. The image is drawn by dividing the paper with dashed lines using T square. Using the 45 degree triangle, draw diagonal lines to create the star and the star.

Constructing 4 Point Star Overlapping Box Pattern using T Square and Triangle

A problem exercise to construct a star overlapping square using a triangle and T square. The image is…

This folding square is also known as a t-square which is a technical instrument, primarily a guide for drawing horizontal lines on a drafting table.

Folding Square

This folding square is also known as a t-square which is a technical instrument, primarily a guide for…

This is an appliance which is mostly filled with a cleaning agent that sterilizes used or new razors.

Razor Sterilizer

This is an appliance which is mostly filled with a cleaning agent that sterilizes used or new razors.

This is a carpenters tools which is used to help in the carrying of sharp objects, in particular large scale saws.

Saw Carrying Case

This is a carpenters tools which is used to help in the carrying of sharp objects, in particular large…

This knife features a unique knife guard which prevents the accidental sliding of the hand from the handle base onto the blade.

Knife Guard

This knife features a unique knife guard which prevents the accidental sliding of the hand from the…

This agricultural tool is used to pull out weeds.

Weed Puller

This agricultural tool is used to pull out weeds.

This disk harrow is another farm implement that is used to cultivate the soil where crops are to be planted.

Disk Harrow

This disk harrow is another farm implement that is used to cultivate the soil where crops are to be…

A Hartmann Spectrocomparator device to measure accurate displacement of the star by measuring the relative star motion to the observer. The object is first photographed, then the image is attached to the device measuring the distance.

Hartmann Spectrocomparator

A Hartmann Spectrocomparator device to measure accurate displacement of the star by measuring the relative…

A diagram of Hartmann Spectrocomparator device to measure accurate the star's displacement. The photographed star is clamped on to the device. Then the series of light is reflected onto the photograph into the eyepiece to measuring the star's motion.

Hartmann Spectrocomparator Diagram

A diagram of Hartmann Spectrocomparator device to measure accurate the star's displacement. The photographed…

This grass hook, which is a shorter version of a scythe, both are agricultural tools for mowing grass or reaping crops.

Grass Hook

This grass hook, which is a shorter version of a scythe, both are agricultural tools for mowing grass…

A try-square is a woodworking or a metal working tool used for marking and measuring a piece of wood

Woodworking Square

A try-square is a woodworking or a metal working tool used for marking and measuring a piece of wood

This weed destroyer is an agricultural implement which aids in the removal of weeds from landscapes.

Weed Destryoyer

This weed destroyer is an agricultural implement which aids in the removal of weeds from landscapes.

A hand tool consisting of a handle fixed to a copper tip that is heated, electrically or in a flame, and used to melt and apply solder.

Soldering Iron

A hand tool consisting of a handle fixed to a copper tip that is heated, electrically or in a flame,…

A variously shaped hand tool having a pair of pivoted jaws, used for holding, bending, or cutting

Quick Grip Pliers

A variously shaped hand tool having a pair of pivoted jaws, used for holding, bending, or cutting

A flexible band, as of leather or cloth, worn around the waist to support clothing, secure tools or weapons, or serve as decoration.

Apparel Belt

A flexible band, as of leather or cloth, worn around the waist to support clothing, secure tools or…

Any of various tools, either hand-operated or power-driven, having a thin metal blade or disk with a sharp, usually toothed edge, used for cutting wood, metal, or other hard materials.

Machine Saw

Any of various tools, either hand-operated or power-driven, having a thin metal blade or disk with a…

An Amsler Polar Planimeter instrument used to measure the area of an arbitrary shape. The planimeter traces the shape of the graph with respect to the origin. The wheel at the hinge shows the measurement of the area.

Amsler Polar Planimeter to Find Area of Indicator Diagram

An Amsler Polar Planimeter instrument used to measure the area of an arbitrary shape. The planimeter…

Any of various hand or power tools, often having fixed or adjustable jaws, used for gripping, turning, or twisting objects such as nuts, bolts, or pipes.

Pipe Wrench

Any of various hand or power tools, often having fixed or adjustable jaws, used for gripping, turning,…

A T-shaped ruler, used primarily in mechanical drawing, having a short crosspiece that slides along the edge of the drawing board as a guide to the perpendicular longer section in making parallel lines, right angles, etc., and as a support for triangles.

Adjustable Drafting T-Square

A T-shaped ruler, used primarily in mechanical drawing, having a short crosspiece that slides along…

Specialized implements used to cut human head hair. They should not be confused with razors (which usually refer to tools used to cut facial hair or bodily hair) and scissors.

Hair Clipper

Specialized implements used to cut human head hair. They should not be confused with razors (which usually…