Im hs swim coach in indoor pool. its me against 40 kids! need loud authoritative whistle, love acme thunderer but is this the right model for my use?

Most swim coaches use the 59.5 but the 63 is louder.

What do the numbers mean 58.5 59.5 60 etc.?

Actually, the Acme website calls the 58.5 the "large" Thunderer, the 59.5 "medium", and the 60.5 "small". Also, the image is supposed to depict the Thunderer 58.5, but it appears to be the 58, so I'm not sure which one they would send to you.

Acme Thunderer Whistle 58 | Desertcart Finland

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€ 50.05

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Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Blow the competition away with the iconic Acme Thunderer!

INSTANT COMMAND - Blow once, get an immediate, sharp response—no lag, no hesitation.
LEGACY OF EXCELLENCE - Trusted since the 1890s, the gold standard for coaches and referees worldwide.
ERGONOMIC FINGER GRIP - Designed for secure handling during high-pressure moments on the field.
TIMELESS CRAFTSMANSHIP - Nickel-plated metal finish ensures durability and a sleek, professional look.
PRECISION IN EVERY BLOW - Engineered with a waterproof speed pea for flawless, weatherproof performance.

The Acme Thunderer Whistle - 58 is a compact, nickel-plated metal whistle featuring a waterproof speed pea for reliable, instant sound output. Designed with an ergonomic finger grip and polished finish, it combines over a century of trusted craftsmanship with modern high-tech enhancements, making it the preferred choice for coaches, referees, and sports professionals globally.

Specifications

ASIN	B0002F7AGU
Best Sellers Rank	#126,781 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #224 in Coach & Referee Whistles
Color	Brass
Customer Reviews	4.7 4.7 out of 5 stars (468)
Date First Available	March 1, 2010
Finish	Polished
Included Components	Whistle
Item Package Quantity	1
Item Weight	0.32 ounces
Item model number	58
Manufacturer	J Hudson & Co (Whistles) Ltd
Material	Metal
Part Number	58
Pattern	Solid
Product Dimensions	2.25 x 0.5 x 0.5 inches
Style	58
Warranty Description	Manufacturer warranty.

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