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2. Hair-cutting shears - Wikipedia

   en.wikipedia.org/wiki/Hair-cutting_shears

   Hair-cutting shears. Hair-cutting shears are scissors that are specifically designed for cutting hair. They are also known as barber shears, hairdressing shears, or hair shears. They range in size from about 5 to 7 inches (13 to 18 cm) long [1] and commonly have an appendage, known as a finger brace or tang, attached to one of the finger rings.

3. Liming (leather processing) - Wikipedia

   en.wikipedia.org/wiki/Liming_(leather_processing)

   Liming is a process used for parchment or leather processing, in which hides are soaked in an alkali solution. It is performed using a drum and paddle or a pit. Its objectives are: [1] Removal of interfibrillary proteins. Removal of keratin proteins. Collagen swelling due to the alkaline pH. Collagen fibre bundle splitting. Removal of natural ...

4. Quartz fiber - Wikipedia

   en.wikipedia.org/wiki/Quartz_fiber

   A quartz fiber dosimeter, a device using a quartz fiber.. Since quartz fiber is expensive, it has limited applications. [2] It is used mainly for producing composite materials (due to having higher stability compared to glass fiber) and in electrical applications where thermal resistance and dielectric properties are important. [9]

5. Scissors - Wikipedia

   en.wikipedia.org/wiki/Scissors

   Hair-cutting shears and kitchen shears are functionally equivalent to scissors, but the larger implements tend to be called shears. Hair-cutting shears have specific blade angles ideal for cutting hair. Using the incorrect type of scissors to cut hair will result in increased damage or split ends, or both, by breaking the hair. Kitchen shears ...

6. Conservation and restoration of parchment - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Parchment is usually positively identified by sight, sometimes with the assistance of a hand lens or microscope. Visible hair follicle pattern, veining, scars, bruises and sometimes fat deposits all help confirm the animal origin of the material. Additional light sources including ultraviolet lights, can make these properties more easily ...

7. Pinking shears - Wikipedia

   en.wikipedia.org/wiki/Pinking_shears

   A pair of pinking shears with fabric underneath which has been pinked along the edges. Pinking shears are scissors with saw-toothed blades instead of straight blades. They produce a zigzag pattern instead of a straight edge. Before pinking scissors were invented, a pinking punch or pinking iron was used to punch out a decorative hem on a garment.

8. Pruning shears - Wikipedia

   en.wikipedia.org/wiki/Pruning_shears

   Professional pruning shears often have replaceable blades. There are three different blade designs for pruning shears: anvil, bypass and parrot-beak. Anvil pruners have only one blade, which closes onto a flat surface; unlike bypass blades it can be sharpened from both sides and remains reliable when slightly blunt. Anvil pruners are useful for ...

9. Crystal oscillator - Wikipedia

   en.wikipedia.org/wiki/Crystal_oscillator

   A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. [1] [2] [3] The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.