A strong pin, or contrivance, used to fasten or hold something in place.

Bolt

A strong pin, or contrivance, used to fasten or hold something in place.

A section of the end of a finger and nail. Labels: 4, Section of the last bone of the finger. 4, Fat, forming the cushion at the end of the finger. 2, The nail. 1, The cuticle continued under and around the root of the nail (3).

A Section of the End of the Finger and Nail

A section of the end of a finger and nail. Labels: 4, Section of the last bone of the finger. 4, Fat,…

The fingernail completely isolated, seen from the convex side.

Fingernail

The fingernail completely isolated, seen from the convex side.

Transverse section through nail and the terminal portion of the ring finger.

Transverse Section Through Fingernail and Finger

Transverse section through nail and the terminal portion of the ring finger.

Transverse section of nail wall and adjacent part of nail plate and nail bed.

Transverse Section of Fingernail Wall

Transverse section of nail wall and adjacent part of nail plate and nail bed.

"<em>A</em>, last bone of finger; <em>B</em>, true skin on the dorsal surface of finger; <em>C</em>, outer skin; <em>D</em>, true skin; <em>E</em>, bed of nail; <em>F</em>, true skin of pulp of finger." &mdash; Blaisedell, 1904

Longitudinal seciont of a fingernail

"A, last bone of finger; B, true skin on the dorsal surface of finger; C,…

Longitudinal section through human nail and its nail groove (sulcus).

Longitudinal Section Through Fingernail

Longitudinal section through human nail and its nail groove (sulcus).

The matrix of a nail or nail bed, with the nail fold and nail walls displayed by the removal of the epidermic portion of the nail or nail proper and the surrounding epidermis.

Matrix of a Fingernail

The matrix of a nail or nail bed, with the nail fold and nail walls displayed by the removal of the…

The matrix of a nail with partly opened marginal groove of the nail bed.

Matrix of a Fingernail

The matrix of a nail with partly opened marginal groove of the nail bed.

Transverse section through human nail and its nail groove (sulcus).

Transverse Section Through Fingernail

Transverse section through human nail and its nail groove (sulcus).

"Formerly, all nails were hand made, by forging on an anvil; and vast quantities are still made in this manner, being preferable, for many kinds of carpenter's work, to those made by machinery." &mdash;The Popular Cyclopedia, 1888

Nail forge

"Formerly, all nails were hand made, by forging on an anvil; and vast quantities are still made in this…

There are about 50 different styles of hammers, each one having a trade name. They are of every size, from a tack-hammer, weighting a few ounces, up to the blacksmith's great straight-handled sledge-hammer, weighing twenty pounds or more. Many are named after the trade in which they are used.

Types of Hammers

There are about 50 different styles of hammers, each one having a trade name. They are of every size,…

A mallet is a type of hammer with a head made of softer materials than the steel normally used in hammerheads, so as to avoid damaging a delicate surface.

Mallets

A mallet is a type of hammer with a head made of softer materials than the steel normally used in hammerheads,…

"<em>A</em>, section of cutaneous fold turned back to show root of nail; <em>B</em>, cutaneous fold covering root of nail; <em>C</em>, semilunar whitish portion; <em>D</em>, body of nail." &mdash; Blaisedell, 1904

Nail in position

"A, section of cutaneous fold turned back to show root of nail; B, cutaneous fold…

Longitudinal section through root of nail.

Longitudinal Section Through Nail Root

Longitudinal section through root of nail.

"Concave or Adherent Surface of the Nail. <em>A</em>, border of the root; <em>B</em>, whitish portion of semi-lunar shape; <em>C</em>, body of nail. The continuous line around border represents the free edge." &mdash; Blaisedell, 1904

Surface of a nail

"Concave or Adherent Surface of the Nail. A, border of the root; B, whitish portion…

Transverse section of a nail.

Transverse Section of a Nail

Transverse section of a nail.

The plaiting or braiding of a sennit, a flat cordage used in crafts.

Plaiting of Sennit

The plaiting or braiding of a sennit, a flat cordage used in crafts.

A tool in which the wood working end is pointed, blunt, and a continuous edge enclosing an area, or a pattern in relief or intaglio. Used to perforate or indent a solid material.

Punch

A tool in which the wood working end is pointed, blunt, and a continuous edge enclosing an area, or…

A type of two-pronged fastener, usually metal, used for joining or binding materials together. Large staples might be used with a hammer or staple gun for fencing, masonry, roofing and corrugated boxes.

General Purpose Staple

A type of two-pronged fastener, usually metal, used for joining or binding materials together. Large…