G45 ASTM Grain Sizing E19-46

Marsoni

M251S

$611.50

Get it in 3 business days with 1 day shipping. Friday, May 29

G45 ASTM Grain Sizing E19-46Pattern G45 Description ASTM E19 46 Grain Sizing Disc Key features Eyepiece Reticle to ASTM E19 46 Circular pattern with 10 different segments each with a progressively smaller pattern for grain size analysis. Image Diameter 15mm Glass Type and Thickness Soda Lime 1. 5mm thick Diameter Tolerance +0 0. 1mm Orientation Correct reading through glass

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I like this map holder for its versatility in holding different size maps. Once sealed, it was very effective at keeping moisture out and protecting the maps. I originally used this on a 13K mountain ascent. Worked great. The only thing that can be tricky at times is sealing the top. It's not as easy as sealing a typical zip-loc kitchen bag, takes some doing to get it to seal.

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Reviewed in the United States on May 26, 2025

Verified Purchase

BearKnife

Grantham, US

★★★★★ 5

Best Map Case Ever!!!

Size: Regular - 12 x 16 Inches

Best Map case in the market! Field tested and keeps everything dry. The size is fantastic and you can run paracord through the rings. I would recommend this to anyone that uses a map. You definitely pay for what you get and that's high quality and functionality.

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Reviewed in the United States on August 13, 2025