Each record may be linked to any of a number of pieces of information, some textual, some visual, including:

• Shape of tool. Drawing of significant shapes.
• Maker's marks.. Drawing or photo of significant marks.
• Mark left by tool
• Documentation of tool's use (photo, drawing, description, video).
• Examples of other tools that perform similar functions
• Examples of other tools used in the same trade
  Including links to contemporary tool groupings (often illustrated).
• Photograph of the item
• Contemporary sales catalogue and similar external information
• Secondary reference works
• Patent or prototype
• History of development of tool over time
• Tools used together (mallet and chisel, etc.)

Examples

Beginning with a Hey's saw....

Find its prototype, Hey's own saws:

See its place in the development of skull saws:

See the tool in use:

(Image omitted for squeamishness)

Find a contemporary match in a catalogue:

Examine the marks left by the tool:

Beginning with a cooper's adze...

See the tool's use illustrated:

See a contemporary grouping of tools belonging to that trade:

Beginning with a wooden plane...

See the patent drawing for its iron holding mechanism: