wll this work on finding a leak on a fiberglass boat?

It can find 'trapped moisture' as would be expected if WITHIN the fiberglass there is a wetted plywood laminate. Certainly the moisture in that '(mapped) area' would have a source, usually a deck fitting for instance. Be careful on the 'analysis,' as it may read non-structural (decorative) wall covering on the other side. Also, try to perform studies on a 'very dry' day.

What is the accuracy of this meter, and what was it compared to or tested against?

The accuracy is ± 4%,. the reference relative drying value is the measured value of conventional air humidity (relative humidity 50%~70%, temperature 25 ℃)+compensation value of human body.

Where is this manufactured?

Looks like China in the description.

What is the difference between pinless sand pinless color?

As to what I understood, Pinless is a bit less accurate gives you moisture readings percentage based on humidity so if there is something as a metal behind it senses the coldness of metal and adds it as moisture vs pin one is dead spot on which senses the humidity as the pins go into drywall, wood etc Hope this helps

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RDINSCOS Pinless Wood Moisture Meters Drywall Mold Moisture Detector for Lumber Concrete Building -Wall Moisture Sensor Digital Humidity Tester for Firewood (Pinless)

Product ID: 385288193

📊3-color LED + backlit LCD display

📏Pinless tech protects surfaces

🔋9V battery included for instant use

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2095693₫

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔍 Pinpoint moisture without the mess—because your projects deserve precision and care.

AUDIBLE VISUAL ALERTS - High-pitch tones and LED indicators pinpoint moisture hotspots quickly and precisely.
INSTANT CLEAR READINGS - Big backlit LCD and tricolor LED bar graph deliver moisture data at a glance—even in low light.
MOLD PREVENTION MADE EASY - Early detection of damp spots helps you stop mold before it starts, protecting your home and health.
TRUSTED DURABILITY WARRANTY - Backed by a 3-year replacement warranty, this meter is built to last and keep you confident.
DAMAGE FREE MOISTURE DETECTION - Pinless design means zero pinholes or scratches on your valuable surfaces.

The RDINSCOS Pinless Wood Moisture Meter offers professional-grade, non-invasive moisture detection with a large backlit LCD and tricolor LED indicators. Powered by an included 9V battery, it provides audible alerts and a hold function for easy readings. Ideal for preventing mold and protecting wood, drywall, and concrete surfaces, it comes with a 3-year replacement warranty, combining reliability with user-friendly design.

Specifications

ASIN	B09BJJX1B8
ASIN	B09BJJX1B8
Batteries	1 9V batteries required. (included)
Batteries	1 9V batteries required. (included)
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Zinc Carbon
Best Sellers Rank	#36,764 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Moisture Meters
Color	Green
Customer Reviews	4.5 4.5 out of 5 stars (3,367)
Customer reviews	4.5 4.5 out of 5 stars (3,367)
Date First Available	17 August 2021
Date First Available	17 August 2021
Item Package Quantity	1
Item Weight	148 g
Item model number	MT28
Item model number	MT28
Manufacturer	SHENZHEN REDDRAGON INSTRUMENTS CO.,LTD
Manufacturer	SHENZHEN REDDRAGON INSTRUMENTS CO.,LTD
Material	Wood
Part number	MT19B
Plug Profile	Wall Mount
Product Dimensions	17 x 9 x 4 cm; 148 g
Product Dimensions	17 x 9 x 4 cm; 148 g
Style	Pinless
Voltage	9 Volts

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2095693₫

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In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

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