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AmScope MR400 Microscope Calibration Slide, Four Graduated Scales, Precision-Ground Glass Construction

by AmScope
4.4 out of 5 stars 20 customer reviews

List Price: $72.00
Price: $34.98 & FREE Shipping on orders over $35. Details
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  • Microscope calibration slide for calibrating microscope eyepiece and camera reticles
  • Four graduated scales include 0.07mm dot, 0.15mm dot, crosshair, and single line
  • Brightly illuminated grid lines on precision-ground glass construction provide accurate readings
  • Includes case
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Frequently Bought Together

  • AmScope MR400 Microscope Calibration Slide, Four Graduated Scales, Precision-Ground Glass Construction
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  • AmScope EP10X23R WF10X Microscope Eyepiece with Reticle (23mm)
Total price: $79.25
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Technical Details

  • Brand Name: AmScope
  • Part Number: MR400
  • Number of Items: 1
  • Item Package Quantity: 1

Product Description

The AmScope MR400 microscope calibration slide has four graduated scales for calibrating microscope eyepiece and camera reticles. The four graduated scales include a 0.07mm dot, a 0.15mm dot, a 0.01mm crosshair, and a 0.01mm single line. Brightly illuminated grid lines on precision-ground glass construction provide accurate readings. The slide comes with a protective case.

Microscopes are instruments used to enhance the resolution of an object or image. Types include compound, stereo, or digital. Compound microscopes use a compound optical system with an objective lens and an eyepiece. Stereo microscopes show object depth in a three-dimensional image. Digital microscopes are used to display an image on a monitor, rather than looking through a lens. Microscopes can have monocular (one), binocular (two), or trinocular (three) eyepieces, with varying magnification abilities. Magnification ability refers to the size of an image. Resolution, also known as resolvant power, refers to the clarity of the image. The interaction between field of view (FOV), numerical aperture (NA), and working distance (WD) determines resolution. Microscopes can control magnification through a fixed focus, or through a range of adjustments. They can also utilize LED, fluorescent, and mirror light sources to help control viewing capabilities. Microscopes are widely used in education, lab research, biology, metallurgy, engineering, chemistry, manufacturing, and in the medical, forensic science, and veterinary industries.

United Scope manufactures microscopy equipment and accessories under the brand name AmScope. The company, founded in 1996, is headquartered in Irvine, CA.


Product Details

  • Product Dimensions: 3.5 x 1.7 x 0.8 inches ; 3.5 ounces
  • Shipping Weight: 3.5 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B005KVGAAS
  • Item model number: MR400
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (20 customer reviews)
  • Amazon Best Sellers Rank:
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
  • Date first available at Amazon.com: September 2, 2011

Customer Reviews

Top Customer Reviews

Verified Purchase
The slide was exactly as described and made it very easy for me to re-calibrate my microscope. Definitely would recommend for anyone who wants to have an accurate calibration of their microscopes, especially for the price!
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Verified Purchase
I was very happy to find these so cheap. I'm using them to calibrate a microscope for a Brownian motion experiment measuring the motion of 1 micron polystyrene beads. It works great in Vernier's Logger Pro! I'm using the Celestron telescope video cameras that are perfect to fit into standard microscope eyepieces. I was able to put this college-level lab experiment together very cheaply. I could even replace the beads with milk fat to make it even cheaper.
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Verified Purchase
It seems at first a little expensive for a piece of glass, but one has to understand it's a very precise instrument. It's very useful to calibrate your microscope and measure the field of view with your different lenses
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Verified Purchase
This calibration slide was much easier to use than another calibration slide from Motic. The markings in the microscope were very clear and photographed very well in a digital photomicroscope. It was very helpful to have the written 0.1 mm or other spacing between marks on the slide etched right into the slide, near the lines indicating the spacing.
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Verified Purchase
I purchased this so I could set up some measurement scales for photographs in Photoshop. I have no way to directly double-check the accuracy of the markings, but organisms seem to be measuring out to the expected sizes based on the markings on this slide. Very content with my purchase.
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Verified Purchase
Nicely made and packaged stage micrometer. I still like to double check scopes to be sure they are calibrated correctly by directly measuring a known unit on the stage.
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Verified Purchase
I have not checked the accuracy of the calibration scale on this slide, and haven't compared it to any other standard. The seller does not provide any assurance of a traceable accuracy. But, if we assume that the scale and calibration on the slide is correct, then....

This is a steal of a price for a calibration slide. Science supply websites sell these for over $200, sometimes at $1000. So, I was happy to see the price.

I have used this to calibrate my professional microscope using up to 500x mag (using 50x objective), and could probably use for 100x objective, but haven't tried. I also used this for calibrating my DSLR camera. I use the DSLR on my microscope along with a professional microscope camera and this calibration slide allows me to get the correct calibration for each. I also use my DSLR for macro scientific photography, and using different lenses, I can calibrate sizes with this.

The slide comes in a nice cushion package so it's protected well.

The markings are easy to see, and there are lots of markings.

I will buy again if I need another.
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Verified Purchase
This slide let me evaluate several competing brands of microscope at a fraction of the cost of more complex slides. Great quality and quick service also.
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AmScope MR400 Microscope Calibration Slide, Four Graduated Scales, Precision-Ground Glass Construction
This item: AmScope MR400 Microscope Calibration Slide, Four Graduated Scales, Precision-Ground Glass Construction
Price: $34.98
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