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Description
BENETECH GM130 Ultrasonic Thickness Meter Tester Gauge, Measure Range: 1.00~300.0mm, GM130This unit is an intelligent handheld product, which adopts ultrasonic measuring principle, and is controlled by microprocessor, provides quick and precise measurement of thickness for most of industrial material. This unit is widely used in various precise measurement for different hardware parts in industrial realm; one of its important application is to monitor the level of thickness decreasing during operation of various and pressure container.
This unit is an intelligent handheld product, which adopts ultrasonic measuring principle, and is controlled by microprocessor, provides quick and precise measurement of thickness for most of industrial material. This unit is widely used in various precise measurement for different hardware / parts in industrial realm; one of its important application is to monitor the level of thickness-decreasing during operation of various and pressure container. Diffusely applied in manufacture fields, metal processing, and commercial inspection.Scope of application: This unit is suitable for measuring materials that are good ultrasonic conductor such as metal, plastic, acrylic, glass etc., as long as the measured part in two parallel surfaces for measurement of thickness. This unit is not suitable for cast iron due to its big crystalloid composition.
Features and functions:
1. Auto calibration to assure the accuracy
2. Sound velocity measurement: with a given thickness to measure the sound velocity to improve accuracy
3. 12 sound velocities for different material
4. Coupling status indication
5. Preset 12 thickness measurement data store and recall
6. Thickness alarm setup
7. Backlight display
8. Low battery indication
9. Auto power off
10. Metric / Imperial selection
11. Measuring mode selection
Specification:
1. Measuring range: 1.0~300mm
2. Accuracy: +/-(1%H+0.1)mm
3. Resolution: 0.01mm(1.00 to 99.99mm), 0.1mm(100 to 300mm)
4. Sound Velocity Range: 1000~9999m/s
5. Working Frequency: 5MHZ
6. For Tube Measuring: Diameter 15 x 2.0mm( 6mm transducer), Diameter 20 x3.0mm (10mm transducer)
7. Power Supply: 3 x 1.5V AAA Batteries (Not Included)
Specification:
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4.3 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Five Stars
Format: Paperback
Professor Cornford's translation with running commentary is definitive.
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Reviewed in the United States on November 5, 2015
★★★★★ 5
Plato's dialogue about the physical world
Format: Paperback
The two biggest topics in the Timaeus are astronomy and the elements of bodies, which are constructed using triangles and the tetrahedron, octahedron, icosahedron, and cube. I would like to see a translation of the Timaeus that uses it as a way to introduce all the astronomy that appears in the dialogue. Introducing the astronomy does not mean just talking in words about spheres or the zodiac or the ecliptic, but actually explaining how these were used by astronomers. Cornford has much to say, but to someone who has not learned any Greek astronomy his commentary will be opaque and hard to use. I didn't know the astronomy well enough to readily understand Cornford's explanations. I plan to learn more classical Greek astronomy, perhaps using Evans'
, and then read Waterfield's translation of the Timaeus
.
Before reading this you should have read the Republic and know some classical Greek natural philosophy, mathematics, and astronomy. Although Cornford's commentary makes the dialogue staccato, I am glad for it because I wouldn't otherwise have understood much of what Plato says. The Timaeus and the Parmenides are the two dialogues of Plato that one needs commentary to understand; the Parmenides demands the commentary because so much of what is happening depends on the original language, and the Timaeus demands the commentary because of all the things the reader is supposed to be familiar with.
The following is a list of topics I kept while reading the dialogue: theory of Forms 27d-28a, 51a-52a; harmonics 35b-36b; time 37c-38e, 39b-e; vision 45b-46c, 67c-68d; space 52b; surfaces 53c; weight 62d-63e; sound 67a-67c; physiology 70c-79e, 80d-86a; antiperistasis 79e-80c.
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Reviewed in the United States on December 12, 2015
★★★★★ 4
Helpful, but Waterfield is better for an intro
Format: Paperback
This is basically a scholarly paragraph-by-paragraph commentary on the Timaeus. It's really good for what it is, but I don't recommend it as your first introduction to the Timaeus -- rather, I recommend Waterfield:
http://www.amazon.com/Timaeus-Critias-Oxford-Worlds-Classics-ebook/dp/B006NTMD16
A problem with using Cornford as an introduction is that he comments on everything, and it's hard to figure out what the main themes are. I tried reading Cornford as an intro and gave it up, but once I'd read Waterfield I found Cornford extremely helpful both in elucidating passages further than Waterfield does, and in interpreting passages Waterfield doesn't cover. So if you're looking to learn about the Timaeus, I'd suggest Waterfield first and Cornford second (or Cornford alongside Waterfield).
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Reviewed in the United States on February 24, 2014
★★★★★ 5
Cornford's running commentary is arguably the best suited to fulfill this desire
Readers of any of Plato's works are bound to feel they might profit from various commentaries. His Timaeus, in particular, may be said to elicit such a hope because of number and intricacy of its details. Cornford's running commentary is arguably the best suited to fulfill this desire: it helps make clear the integrity of the dialogue as a whole and illumines the specific points along the way. Although this work is certainly dated, originally published in 1937, it is certainly one of the best full commentaries on the Timaeus.
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Reviewed in the United States on November 4, 2014
★★★★★ 5
Plato's view of the creation of the world
Format: Paperback
A cosmology is a narrative concerning the creation of the universe. Many ancient philosophers have written or elaborated this kind of work. The Platonic dialogue Timeus is an account of the work of the creator god (called the demiurge - or artisan) sculpting the chaotic material world in accordance with the immaterial model of the Ideas. But the text was written in a very hermetic and symbolic language, making its interpretation difficult or even impossible without the knowledge of the references and symbols used by Plato. This book is a complete translation of the text followed by a comprehensive commentary explaining in detail every passage. Francis MacDonald Cornford is one of the most important ancient philosophy scholars, and this work reveals his deep knowledge of Platonic and Greek thought. It is a must have for anyone interested in greek and Platonic philosophy.
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Reviewed in the United States on February 13, 2008