Прохожу обучение по Java и понадобилось изучить статью Java Memory Model. Перевёл её для лучшего понимания, ну а чтоб добро не пропадало решил поделиться с сообществом. Думаю, для новичков будет полезно, и если кому-то понравится, то переведу остальное. Первоначальная Java-модель памяти была недостаточно хороша, поэтому она была пересмотрена в Java Эта версия модели все ещё используется сегодня (Java 14+). Внутренняя Java-модель памяти. Find the best digital tape measure. We review the best models of the year and give you buying advice in our comprehensive guide.  The tape measure is one of those tools that have been around for many years with very little modifications. As the old saying goes, if it isn’t broke, don’t fix it. However, modern technology has made it possible to upgrade even a tool as simple as the tape measure in powerful ways. Lasers can measure further and straighter than you ever could hope to with tape, and there are no retraction nightmares. The digital screen is easier to read than tape, and it can store your measurements as well as perform calculations. A tape measure or measuring tape is a flexible ruler used to measure size or distance. It consists of a ribbon of cloth, plastic, fibre glass, or metal strip with linear-measurement markings. It is a common measuring tool. Its design Tape Measure With Digital Readout Database allows for a measure of great length to be easily carried in pocket or toolkit and permits one to measure around curves or corners. Today it is ubiquitous, even appearing in miniature form as a keychain fob, or novelty item. Surveyors use tape measures in lengths of over. Log in. A flexible steel tape 14 having a catch finger 15 at the end thereof is shown partially extended. Breveleri A. I've also found vernier caliper extension returns lots of hits on Google images that are a good cheaper alternative to what appears to be an expensive and highly customised measuring device. I thought I'd add a couple of interesting solutions I came across in my research:. Tape measure with digital readout java latter is a simple matter djgital resolve.

The tang is connected to the tape with loose rivets through oval holes, and can move a distance equal to its thickness, to provide both inside and outside measurements that are accurate. The self-marking tape measure allows the user an accurate one hand measure.

The first record of people using a measuring device was by the Romans using marked strips of leather, but this was more like a regular ruler than a tape measure.

On December 6, patent 45, was issued to William H. Bangs of West Meriden, Connecticut. Bang's rule was the first attempt in the United States to make a spring return pocket tape measure. The tape could be stopped at any point and held by the mechanism. The tape could be returned to the case by sliding a button on the side of the case which then allowed the spring to pull the tape back into the case.

On 3 January , Hiram A. Farrand received patent 1,, for his concave-convex tape, a major improvement for spring pocket tape measures. It was Farrand's concave-convex tape that went on to become the standard for the majority of pocket tape measure tapes today. The first patented for a long tape measure in the United States was patent 29, issued July 10, to William H.

Paine of Sheboygan, Wisconsin, [6] and produced by George M. Eddy and Company of Brooklyn, New York. This tape had no increments on it. It accurately measured only a distance equal to the total length of the tape from beginning to end marker, a brass piece attached to the tape at a measured distance.

The measured length was marked on the case or crank. Later, by the early s, Justus Roe of Patchogue, New York added rivets attaching small brass washers to the tape to mark inches and feet. They were attached every inch in the first and last foot and every foot from one to the end of the last foot. A small brass tag, marked with a number indicating the number of feet to that point, was attached every five feet.

This feature was never patented, but Justus Roe and Sons produced tape measures, "Roe Electric Reel Tape Measures", with this feature during the s and early s when they started etching or stamping increments and numbers on the tapes. The "electric" part of the name was purely an affectation; there was nothing electrical about it. The basic design on which all modern spring tape measures are built can trace its origins back to an patent by a West Meriden, Connecticut resident named William H.

Bangs Jr. According to the Tape Measure Digital Readout Java text of his patent, Bang's tape measure was an improvement on other versions previously designed. The spring tape measure has existed in the U. In the late s, carpenters began slowly adopting H. Farrand's design as the one more commonly used. This design is the basis for most modern pocket tape measures used today. With the mass production of the integrated circuit IC the tape measure has also entered into the digital age with the digital tape measure.

Some incorporate a digital screen to give measurement readouts in multiple formats. An early patent for this type of measure was published in There are also other styles of tape measures that have incorporated lasers and ultrasonic technology to measure the distance of an object with fairly reliable accuracy.

Tape measures often have black and red measurements on a yellow background as this is the optimal color combination for readability.

Justus Roe, a surveyor and tape-maker by trade, made the longest tape measure in , at feet m. The Northern Virginia Surveyors Association presented the foot, gold-plated surveyor's tape measure to Mickey Mantle in Some tapes sold in the United States have additional marks in the shape of small black diamonds, which appear every These are used to mark out equal spacing for joists five joists or trusses per US standard 8-foot 2, mm length of building material.

Many US tapes also have special markings every 16 inches mm , which is a US standard interval for studs in construction. Three spaces of 16 inches make exactly 4 feet 1, mm which is the US commercial width of a sheet of plywood , gyprock or particle board. For example, in some Walmarts there are Hyper Tough brand tapes available in both US customary units and Metric units.

So, the inclusion of a metric scale requires the measuring device either to contain 3 scales of measurement or the elimination of one of the US Customary scales. The use of millimeter only tape measures for housing construction is a part of the US metric building code. Millimeters produce whole integer numbers, reduce arithmetic errors, thus decreasing wastage due to such errors.

The US made measuring tape shown on the right is interesting in that it is a "Reverse Measuring Tape", where the measurements can be read from right to left just as well as they can be read when the tape is used from left to right. The metric roll-up tape shown is a millimeter only tape measure. The building industry was the first major industry grouping in Australia to complete its change to metric , being completed by January In this the industry was grateful to the SAA now Standards Australia for the early production of the Standard AS "Metric Units for Use in the Construction Industry", which specified the use of millimetres as the small unit for the metrication upgrade.

In the adoption of the millimetre as the "small" unit of length for metrication instead of the centimetre the Metric Conversion Board leaned heavily on experience in the UK and within the ISO , where this decision had already been taken.

This was formally stated as follows: "The metric units for linear measurement in building and construction will be the metre m and the millimetre mm , with the kilometre km being used where required. This will apply to all sectors of the industry, and the centimetre cm shall not be used.

The logic of using the millimetre in this context was that the metric system had been so designed that there would exist a multiple or submultiple for every use.

Decimal fractions would not have to be used. Since the tolerances on building components and building practice would rarely be less than one millimetre, the millimetre became the sub-unit most appropriate to this industry. While dual scale tapes showing both inches and centimetres are sold, these are mainly imported low-cost items since it would be a restriction of trade to not allow their importation.

Tape measures sold in the UK often have dual scales for metric and imperial units. Like the American tape measures described above, they also have markings every 16 in Tape measures sold in Canada often have dual scales for metric and imperial units. All tapes in imperial units have markings every 16 in Home construction in canada is largely, if not entirely, in imperial measure.

Tapes are used in surveying for measuring Horizontal, vertical or slope distances. Install Tracker 5. What is Tracker? Installing and using Tracker To install Tracker, download and run the appropriate installer using the links at the top of the page.

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Protractors and tape measures provide easy distance and angle measurements. Circle fitter tool fits circles to 3 or more points, steps or tracks.

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