★★★★★ 5
Worked Amazingly!
Needed it for an Army course and would have been lost without it.
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Reviewed in the United States on April 19, 2026
OM Series Flowmeter - OM004S513-821R4
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
OM Series Flowmeter - OM004S513-821R4OM Series Flowmeter OM004S513 821R4 FLOMEC OM Series Meters are an extremely versatile flowmeter which accurately measures high and low viscosity fluids. With no flow conditioning required and a small footprint, the OM004S513 821R4 flowmeter allows for compact installation. An accuracy of 1% and 0. 03% repeatability regardless of viscosity changes make the OM Series a versatile meter. With a simple and reliable design concept using only two moving
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Based on 1247 reviews
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Product Reviews
★★★★★ 5
Companion to the best map markers ever!
These are a must for minor corrections when using their pens!
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Reviewed in the United States on March 9, 2025
★★★★★ 5
Didn’t know what to expect and was pleasantly surprised
Purchased to go along with the staedtler color markers. Mostly writing on laminate and loksaks. Works well and allows you to easily wipe off any permanent marker. Curious as to how long it’ll last. Keep a small cloth to wipe nib clean after use.
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Reviewed in the United States on February 21, 2025
★★★★★ 1
Waste of money
What a waste of money this was. After receiving this I was excited to try it out, my excitement soon turned to disappointment. No matter what I did, the only thing that I could get to come out was clear liquid. It immediately went into the trash.
Save your money and just go buy the BIC correction pen.
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Reviewed in the United States on March 29, 2026
★★★★★ 4
Works well
It works well to erase Staedtler permanent marker from an acetate map covering.
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Reviewed in the United States on November 4, 2025
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