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Brújula de dibujo profesional
En la imagen: Brújula de arco maestro modelo 604
Las brújulas de dibujo ALVIN abarcan una amplia gama de tamaños, aplicaciones y usos. Nuestras brújulas tradicionales de nivel principiante e intermedio seguramente se encontrarán en casa en cualquier geometría o clase de arte. Nuestras brújulas de nivel profesional son la herramienta de precisión perfecta que cualquier ingeniero, dibujante o profesor necesita añadir a su colección de instrumentos de dibujo. Estas brújulas de dibujo de metal pueden hacer círculos de precisión desde 1/8 pulgadas hasta 22 pulgadas de diámetro con barra de haz añadida.
mary
Comentado en los Estados Unidos el 5 de junio de 2024
This compass is sturdy and easy to use - however there are some weird joints that don’t fully lock which can make it difficult if you don’t hold it correctly.
JesseJane
Comentado en los Estados Unidos el 15 de septiembre de 2023
Had to reorder this to replace the one Amazon first shipped that had a huge crack in the front of the protective case. This case is a little beat up, but a great improvement over the first, though I had to switch out everything inside, because the compass had obviously been used, as had the beam.I love Alvin compasses, they are solid and very well designed and built. I've been using them for years.But shame on Amazon for selling these as "new", because they've obviously been used by someone. New items should arrive in pristine condition; neither one of these did. The shipping packaging may have been the problem with the first one--it came in an unpadded, thin plastic bag instead of a box. Going cheap on the shipping package is wasting money and time in the long run for all concerned.
L.B.
Comentado en los Estados Unidos el 8 de abril de 2012
Very disappointed with this purchase. It feels like a quality product and looks nice, however, the tightening knobs do not tighten it enough to keep the pieces from moving and changing as you use it. It is especially useless with the beam arm attached. No matter how hard I try to crank the tightening knob, the arm moves around a lot in the slot and just can't make a consistent circle.I suppose if you are using it very lightly it may hold its position better (not with the beam arm though). I use this in my artwork and need it to make a nice, visible mark and it just can't do it.I totally wasted my money on this one.Update: After a couple months of use, one of the tightening knobs snapped off. It is garbage.
MarkW
Comentado en los Estados Unidos el 7 de abril de 2012
This instrument is exactly what I needed and of course the price was right!! This tool replaced one that had broken from long use. The adjustments are a little different but it works the same.
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