Innen-Aussen-Psychrometer

Marsoni

M251S

$30.00

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

Innen-Aussen-PsychrometerDas Innen Aussen Psychrometer nach August dient der przisen Messung der Lufttemperatur und der Luftfeuchte. Es ist fr den Innen und Ausseneinsatz konzipiert worden. Zur korrekten Bestimmung der relativen Luftfeuchte ist eine Strmungsgeschwindigkeit von ca. 2 m s Voraussetzung. Bei Unterschreitung der Strmungsgeschwindigkeit vergrssert sich der Messfehler. Zur Auswertung der psychrometrischen Differenz ist eine Psychrometertabelle aufgedruckt. Zur

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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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Been wearing these for about ten years! Nothing better to keep a bald head warm than these. The mesh up top lets your head breathe and dissipate heat. I will miss the wider bland then the thin one now because your head does slip out of it instead of it securing comfortably to your scalp! But I don't know maybe the cost of materials dropped the headband width to what it is now! Anyway, still a great piece!

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Reviewed in the United States on August 23, 2024

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Frank Guerrero

Whiting, US

★★★★★ 5

Great product!

Color: Black

Use this under my hard hat to keep from sliding everywhere. I have bought several over the years and this have been my favorite so far. Will definitely buy again.

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Reviewed in the United States on May 13, 2026

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Placeholder

Belleville, US

★★★★★ 4

Good but if the elastic band were wider it would be great

Color: Black

This is a great under helmet or perspiration barrier for the face during heavy spinning workouts. Sadly to avoid an indentation to your forehead, you must wear it inside out because the sewing band is narrow and tight.

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Reviewed in the United States on March 3, 2026

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Cassandra

Charlottesville, US

★★★★★ 5

"Head" of the house gift...

Color: Black

Great fabric, nice fit..

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Reviewed in the United States on May 23, 2026

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Amazon Customer

Waukegan, US

★★★★★ 1

Too damn small

Color: Black

Way too small for an adult. It doesn't even fit my 11 year old. Unfortunately I didn't open it immediately or I would have returned it. Now I'm stuck with something nobody in my house can use.

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Reviewed in the United States on April 16, 2026