can the units be switched from psi to "WC?

Yes I used mine for measuring LP gas pressures.

What is the thread size of the barb metal connector - 1/4 in. or 3/8 in?

The hose Barbs appears to be molded into the housing, for the supplied 1/8" ID dia hose.

why are there 2 connector ports?

Second port is for measuring differential pressure, not needed if only reading pressure, and there is a positive and negative.

Why does it read -.018"H2O without even taking the measurement? That would be quite an error.

Because it hasn’t been “zero’d” yet.

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Leaton Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometer Gas Pressure Tester,12 Selectable Units Differential Pressure Gauge, (Included Battery)

Leaton Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometer Gas Pressure Tester,12 Selectable Units Differential Pressure Gauge, (Included Battery)

Product ID: 460954910

Details

Brand
Leaton
EU Spare Part Availability Duration
3 Years
Item dimensions L x W x H
16 x 8 x 3
Item weight
200 Grams
Material
Plastic Rubber

📊±0.3% accuracy

⏱️0.5s fast response

🌡️-40 to 80°C range

86464CFA

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Description

📈 Elevate your pressure game with precision and speed—because every decimal counts!

INSTANT INSIGHTS - Ultra-fast 0.5-second response time means no waiting—get real-time data when it matters most.
ALL WEATHER READY - Operates reliably from -40°C to 80°C, built to perform in diverse environments and conditions.
EYE FRIENDLY DISPLAY - Large LCD screen designed to reduce eye strain during extended use—work smarter, not harder.
PRECISION YOU CAN TRUST - Achieve lab-grade accuracy with ±0.3% FSO for flawless HVAC and gas pressure readings.
VERSATILE MEASUREMENT MODES - Switch effortlessly between single-pipe and differential pressure readings across 12 selectable units.

The Leaton Manometer QX-1201 is a professional-grade digital air pressure meter designed for HVAC and gas system diagnostics. Featuring ±0.3% accuracy, a rapid 0.5-second response, and a large eye-friendly LCD, it supports 12 units and dual-port differential measurements. Rugged and reliable, it operates across extreme temperatures (-40 to 80°C) and includes essential accessories for immediate use.

Specifications

ASIN	B07CWQJD6D
Brand	Leaton
Brand Name	Leaton
Customer Reviews	4.4 out of 5 stars 834 Reviews
EU Spare Part Availability Duration	3 Years
Item Dimensions	16 x 8 x 3 centimeters
Item Weight	200 Grams
Item dimensions L x W x H	16 x 8 x 3 centimeters
Item weight	200 Grams
Manufacturer	Leaton
Material	Plastic Rubber
Material Type	Plastic Rubber
Model	QX-1201
Number of Items	1
Part Number	T68
UPC	663751079864
Unit Count	1 Count

Reviews

P**S

Manometer

Accurate satisfactorily! Good enough for fluid mechanics lab equipments. Only for gases. And connected appropriately, the pressure is safely carried by the air in the connecting pipes to this gauge ! Can rely on Pascal to read liquid pressures

5.08.2025

M**S

Cumple su fin

Bastante útil para medir perfiles de velocidad en función de la presión estática y absoluta, aunque el juego de conexiones que compré solo tiene el detalle de que los tubos pitot L no están perforados de la boquilla

16.01.2026

S**T

Solid and Versatile Tool for the Job!

This dual-port digital manometer is a fantastic addition to any technician's toolkit. It conveniently includes the battery, two hoses, and a metal fitting, so you can get straight to work. It truly is a budget-friendly device for HVAC tests , manometer hvac tool.

22.05.2026

O**G

Good product but requires proper zero setting

Good product.

28.04.2026

J**T

Great price for a tool that I wont use much

Worked perfect for measuring pressure in my AC ducts. Tool appears well made, and came with good instructions and accessory's.

6.07.2026

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TrustScore 4.5 | 7,300+ reviews

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Fantastic experience overall. Will recommend to friends and family.

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86464CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

1 month ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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