No hay artículos en el carro
No hay artículos en el carro Parámetros del producto
1. Material: PET transparente.
2. Tamaño: 80 x 100 mm.
3. Rango de medición:
Ancho de línea: 0,1-5mm, resolución: 0,1mm
Diámetro del punto: 0,1-5 mm, resolución: 0,1 mm
Ángulo: 0-90 °, resolución: 5 °
Diámetro del círculo: 0,6-3,8 cm
Longitud: 0-4", resolución: 0.04"
Características del producto:
1. Las categorías de medición son completas e intuitivas, y se pueden utilizar para medición de longitud, medición de ancho, medición de tamaño de punto, medición de diámetro y medición de ángulo.
2. Tamaño preciso y no se observan errores a simple vista.
3. Es fácil de llevar, almacenar y usar, y se puede colocar fácilmente en un bolsillo o portafolios.
4. Adoptando tecnología de recubrimiento de película, no es fácil de usar y se puede utilizar varias veces, con alta rentabilidad, bajo costo para obtener resultados de medición de alta precisión.
Método de conservación
1. Para prolongar la vida útil del calibre, debe mantenerse plano para evitar doblarse y rayarse;
2. Si encuentras suciedad o materia extraña en la superficie, límpiala con un paño de algodón sumergido en agua.
Dana Ralston
Comentado en los Estados Unidos el 13 de febrero de 2024
ACCURACY: 5/5. Measured them and they seem to be right on target. As with tools of this type, I'd probably measure them before using in the field.EASY TO USE: 5/5. How complicated can it be? If you can use a ruler or a compass, you can use these as well.VALUE FOR MONEY: 5/5. Cost-effective and simple to use.OVERALL: 5/5. Highly recommended.
Allen
Comentado en los Estados Unidos el 2 de enero de 2024
My interest in this specialized flexible flat plastic tool is to check cracks in concrete floor slabs that have been destabilized by tree roots. The tool provides a quality set of engineering graphics on a card of clear plastic that allows me to visually take comparison and alignment measurements. The tool works well, but I must take care to prevent getting the plastic too dirty or scratching the plastic too much. The complete set allows up to 5 tool replacements. In some situations I use the set at up to 5 different measurent locations within a given area of concrete surface. I generally use photography to document the position of the tool at the subject concrete surface location. When necessary I use a microfiber cloth to clean grime build-up from the plastic tool. The tool is unique, and valuable for anybody taking specialized engineering-type small-scale measurements of surfaces.
varanus_venus
Comentado en los Estados Unidos el 5 de diciembre de 2023
I can’t speak to how useful these are for measuring cracks in concrete, but I present a different use case: drawing and jewelry making!After seeing the gaping sides these dragon scale cabochons were leaving in these earring trays I got, I wanted to test if the tray was oversized or the cabochon was undersized. This guide confirmed the former, as the cabochon squarely sits in the 25mm diameter. If you wind up with random findings and cabochons, you can test their size in the circles on the guide!It would be nice if one of the ruler sides had measurements in millimeters, but they’re both in inches.You also get a nice little carrying case which has been repurposed for storing cabochons. Jewelry makers and artists who draw tiny details will find these rulers useful, but I’d up my rating to 5 stars if there was a millimeter ruler on them!
Samuel
Comentado en los Estados Unidos el 3 de octubre de 2023
First thing that I noticed on this card is that some units are in millimeters and some are in inches. I don't really understand this choice. If I'm using inches then I'm probably going to want to measure my cracks in hundredths of inches, not millimeters.I took a couple spot measurements with my calipers of the printing, and it seemed accurate enough for most purposes. There are a good number of reference items to use on the card, including diameters, radii, angles, crack widths, etc.The plastic film is pretty thin, so I don't expect it to hold up to long use. Comes with a case that's sized for a stack of 100, not 5.The list price of $28 feels absurd for what this is. I usually get these for free from vendors.
JJ
Comentado en los Estados Unidos el 27 de octubre de 2023
From the pictures and description, I had expected this concrete crack checker to be quite a bit bigger.It's barely 4" x 5" or so... or about the size of the palm of my hand!That's so small it almost makes it unusable for many uses.It's also made of quite flimsy thin plastic, and again, not quite as expected.From the illunstrations on the product page, I would have expected this to be about FOUR times the size it is (2x width and 2x height) and would have expected it be about 3x or 4x as THICK...It does serve to provide a very basic crack size check.But for this price, I surely would have expected better quality!
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