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Klafter

Klafter is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Klafter rather than just read about it. In short: The klafter is an historical unit of length, volume and area that was used in Central Europe. Unit of length As a unit of length, the klafter was derived from the span of a man's outstretched arms and was traditionally about 1.80 metres (m).

Klafter — main illustration
Klafter — illustration

Key takeaways

  • Klafter belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Klafter to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Klafter from memory before moving on to harder problems.

Reference excerpt

The klafter is an historical unit of length, volume and area that was used in Central Europe.

Unit of length As a unit of length, the klafter was derived from the span of a man's outstretched arms and was traditionally about 1.80 metres (m). In Austria, its length was, for example, 1.8965 m, in Prussia 1.88 m. In Bavaria, however, a klafter was only 1.751155 m, in Hesse it was significantly larger at 2.50 m. The Viennese or Lower Austrian klafter was fixed by Rudolf II as a measure of length as of 19 August 1588. When, in 1835, the Swiss units were defined using the metric system, 1 Swiss klafter (of 6 Swiss feet each of 0.30 m) corresponded exactly to 1.80 m. In Aachen, Baden, Bavaria, Bohemia, Hamburg, Leipzig, Poland, Trier and Zürich the klafter was exactly six feet, but in the Canton of Fribourg it measured 10 feet. In nautical units of depth, the klafter corresponds to the fathom.

Baseline The survey of Austria-Hungary began in 1762 with the construction of the Vienna Neustadt Baseline (Wiener Neustädter Grundlinie) which was 6410, later 5000, klafters long, represented by 5 measuring rods of 1 klafter in length made of varnished wood.

Unit of volume The old unit of dry volume for split firewood, or Scheitholz, was based on this unit of length. A klafter of wood corresponded to a stack of wood with a length and height of one klafter; the depth of this pile corresponded to the length of the log but, as a rule was 3 feet long, that is 0.5 klafters. The volume of a pile of logs was therefore only 0.5 cubic klafters. This in turn corresponded, depending on the area, to 3 to 4 steres or approximately 2 to 3 m3 of wood. The old Prussian klafter corresponded to 3.339 m3; in Austria, a klafter was equivalent to 3.386 m3. By comparison the North American cord, used to measure firewood and pulpwood, is slightly larger at 3.62 m3. In Switzerland, Werdenfelser Land and parts of Lower Franconia, a klafter of logs corresponds to 3.0 m3 (steres) of stacked firewood since the introduction of the metric system. Usually the logs are 1 m long. One klafter of firewood is thus equivalent to about 2.2 m3. Hay was also sometimes measured in klafters in the 19th century. The cubic klafter was not standardised as the length of a foot varied depending on the region. The cubic klafter used for wood could also differ. Here is an example of the Austrian units.

1 foot (Viennese) = 140.131 Paris lines = 0.3161 metres 1 cubic klafter (Viennese) = 216 cubic feet = 6.8224 cubic metres The cubic foot generally had 1728 cubic inches, each with 1728 cubic lines, each with 1728 cubic points.

1 cubic klafter (Viennese) = 6 cubic klafter feet of 12 cubic klafter inches of 12 cubic klafter lines of 12 cubic klafter points 216 cubic feet of 1728 cubic inches of 1728 cubic lines etc. 1 Viennese cubic klafter = 6.82234457176 cubic metres 1 cubic klafter foot = 1.1370574286 cubic metres 1 cubic klafter inch = 94754785.7 cubic millimetres 1 cubic klafter line = 7896232.1 cubic millimetre 1 cubic klafter point = 658019.3 cubic millimetre 1 cubic foot = 0.0315749412 cubic metres 1 cubic inch = 18249.3 cubic millimetres 1 cubic line = 10.56 cubic millimetres The Rahmklafter, as the unit of timber measurement was called in Austria, was defined for long and short firewood as follows:

1 Rahmklafterof long firewood = 6 feet long and 6 feet high, 1 1/4 ells of log length, about 111 cubic feet 1 Rahmklafterof short firewood = 6 feet long and 6 feet high, 1 ell of log length, about 90 cubic feet Two klafters were counted for one Stoß or livestock unit.

Unit of area In Austria, 1 yoke (Joch, with which the size of fields was measured) comprised 1,600 square klafters with sides measuring 8 by 200 klafters, thus about 5,754 m2 and 0.575 ha, respectively. 1 square klafter (Viennese) was equivalent to 3.5979 square metres. In Croatia, the square klafter was used as unit of area and equalled 3.596652 m2. It is sometimes still used today. In the Swiss Chur Rhine Valley and the Prättigau, the meadowland was measured in klafters. In the adjoining Principality of Liechtenstein, the square klafter is still used today for the measurement of land areas. 1 m2 equals 0.27804 square klafters, 1 square klafter equals 3.59665 m2. The klafter as a unit of length was consequently about 1.8965 metres long. In Darmstadt, 1 square klafter = 100 square feet = 10000 square inches = 6.25 square metres.

Similar units in other countries Conversion table of 1838

Canton of Neuchâtel, Canton of Bern (French-speaking part) 1 toise = 10 feet (pieds) Canton of Valais (French-speaking part) 1 klafter = 6 French feet (pieds de roi) Canton of Vaud (metric based from 1822) 1 toise = 10 feet (pieds) = 3.00 metres 1 toise carrée (square) = 100 square feet = 9.00 square metres 1 toise cube or toise courante (cubic) = 1000 cubic feet = 27 cubic metres Canton of Ticino 1 spazzo = 6 feet (piedi) = 1.808 metres 1 tesa = 6 feet (piedi) = 1.80 metres (introduced in 1851) France 1 toise usuelle = 6 pieds = 2 metres = 1.026148 Parisian toise (old) Piedmont during the French reign 1 tesa = 5 piedi manuali = 759.17 Paris lines = 3.0826 metres Milan under French occupation 1 Cavese di Modena, Modenese klafter = 6 Modenese feet (1 foot = 281.2 Paris lines = 0.63433 m) Russia 1 sazhen = 3 arshin = 2.13356 metres Poland 1 sążeń = 8 feet Spain and former colonies 1 toesa, braza, estado = 2 varas = 6 pies Portugal, also Brazil (value deviating) 1 braça = 2 varas = 8 polegadas Italy, Spain, France, North Coast Africa 1 cañe, xanne (great ell)

See also Cord (unit), North American measure of timber volume Hoppus, British unit of timber volume Orders of magnitude (length) Toise, French six-foot unit of length Yoke (unit of measurement)

References

External links

Illustrations

Klafter: Measures of length: the Schuh, Elle and Klafter at the Altes Rathaus [de; ru], Regensburg
Measures of length: the Schuh, Elle and Klafter at the Altes Rathaus [de; ru], Regensburg
Klafter: Erwin Reidinger [de] explains the land survey of Wiener Neustadt at Point 1192 near the old Fischauer Gate. The symbolic survey lines on the pavement were measured in klafters.
Erwin Reidinger [de] explains the land survey of Wiener Neustadt at Point 1192 near the old Fischauer Gate. The symbolic survey lines on the pavement were measured in klafters.

Worked examples

Example 1 — a first encounter with Klafter

Start with the simplest possible case. Write down what Klafter claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Klafter before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Klafter ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Klafter

In research
Klafter appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Klafter in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Klafter is common in secondary-school and first-year university syllabi. It links to neighbouring topics Human-based units of measurement, Obsolete Croatian units of measurement, Obsolete units of measurement, so understanding it makes those chapters shorter.
In everyday life
Look for Klafter outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Klafter in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Klafter means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Klafter out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Klafter in simple terms?

The klafter is an historical unit of length, volume and area that was used in Central Europe. Unit of length As a unit of length, the klafter was derived from the span of a man's outstretched arms and was traditionally about 1.80 metres (m).

Why does Klafter matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Klafter?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Klafter.

Tags

  • Human-based units of measurement
  • Obsolete Croatian units of measurement
  • Obsolete units of measurement
  • Units of length
  • Units of measurement of the Holy Roman Empire

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