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  2. Multimeter - Wikipedia

    en.wikipedia.org/wiki/Multimeter

    Inexpensive analog meters may have only a single resistance scale, seriously restricting the range of precise measurements. Typically, an analog meter will have a panel adjustment to set the zero-ohms calibration of the meter, to compensate for the varying voltage of the meter battery, and the resistance of the meter's test leads.

  3. Janka hardness test - Wikipedia

    en.wikipedia.org/wiki/Janka_hardness_test

    For hardwood flooring, the test usually requires an 80 mm × 150 mm (3 in × 6 in) sample with a thickness of at least 6–8 mm, and the most commonly used test is the ASTM D1037. When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ...

  4. Wood flooring - Wikipedia

    en.wikipedia.org/wiki/Wood_flooring

    A number of proprietary features for solid wood floors are available. Many solid woods come with grooves cut into the back of the wood that run the length of each plank, often called 'absorption strips,' that are intended to reduce cupping. Solid wood floors are mostly manufactured 0.75 inches (19 mm) thick with a tongue-and-groove for ...

  5. Class of accuracy in electrical measurements - Wikipedia

    en.wikipedia.org/wiki/Class_of_accuracy_in...

    In electrical engineering, characteristics like current or voltage can be measured by an ammeter, a voltmeter, a multimeter, etc.The ammeter is used in series with the load, so the same current flows through the load and the ammeter.

  6. Current sensing - Wikipedia

    en.wikipedia.org/wiki/Current_sensing

    The generated signal could be analog voltage or current or a digital output. The generated signal can be then used to display the measured current in an ammeter, or can be stored for further analysis in a data acquisition system, or can be used for the purpose of control. The sensed current and the output signal can be: Alternating current input,

  7. Galvanometer - Wikipedia

    en.wikipedia.org/wiki/Galvanometer

    Probably the largest use of galvanometers was of the D'Arsonval/Weston type used in analog meters in electronic equipment. Since the 1980s, galvanometer-type analog meter movements have been displaced by analog-to-digital converters (ADCs) for many uses. A digital panel meter (DPM) contains an ADC and numeric display.

  8. Simpson (appliance manufacturer) - Wikipedia

    en.wikipedia.org/wiki/Simpson_(appliance...

    Simpson was founded in 1853 by Alfred M. Simpson (1805-1891) who had migrated from London to South Australia in 1849. Simpson was an innovator and introduced labour-saving machinery and new products such as fire-proof safes, bedsteads, japanned ware, colonial ovens and gas stoves. [1]

  9. Avometer - Wikipedia

    en.wikipedia.org/wiki/Avometer

    The case of the original AVOmeter was a comb-jointed oak box with an ebonite lower front panel. The upper part of the front panel was cast aluminium. After around three years production, the volume of sales was sufficient to justify a redesign of the instrument, now with a movement whose full-scale current was 6 mA.

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