2-Pt. Acoustical Calibrator - Class 2

Marsoni

M251S

$187.00

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

2-Pt. Acoustical Calibrator - Class 2For calibration of all Sper Scientific digital sound meters or any sound level meter with 1 or microphone. Conforms to ANSI S1. 40 1984 and IEC942 1988 Class 2 standards for acoustical calibrators. Simply place the calibrator on to the digital sound meters microphone, turn on the calibrator, and adjust the decibel meters reading to either 94 or 114 dB. Operates at a frequency of 1KHz 4% and with an accuracy of 0. 5 dB. Built in battery check. Easily

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LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!

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Reviewed in the United States on February 18, 2026

Verified Purchase

Lucy Mejia

Houston, US

★★★★★ 5

So will not write down your foot

Size: Medium, Color: (001) Black / Black / Castlerock

I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.

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Reviewed in the United States on May 6, 2026

Verified Purchase

Twins9

Fort Morgan, US

★★★★★ 5

Comfy and Stay Put

Size: Medium, Color: (002) Black / Black / Halo Gray

These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all. The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day. They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable. Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.

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Reviewed in the United States on January 16, 2026

Verified Purchase

swwkennyg

Bozeman, US

★★★★★ 5

Perfect sucks

Size: Medium, Color: (001) Black / Black / Castlerock

Wonderful socks . The weight is perfect !! These do not slip when in a shoe they stay out !!

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Reviewed in the United States on April 14, 2026