Fowler MINI-MAG Plus Digital Protractor 54-422-500-0

The Fowler MINI-MAG Plus is a compact digital protractor with Bluetooth connectivity, a backlit display and embedded magnets on its sides and bottom. Its listing gives dimensions of 4"L x 3.5"W and an accuracy claim of +/-0.0005%.

At a glance

Magnets are embedded on the sides and bottom, with a listed 3.5 lb. pull.
The display is backlit and automatically inverts.
Bluetooth connectivity is listed for a phone or tablet.
The product description also claims USB recharging, a Tilt% function and IP54 protection.

Price

$65.30Save 40%

Reference price: ~~$108.84~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Embedded magnets on three sides can help hold the tool against compatible metal surfaces.
Backlighting and automatic display inversion can make readings easier to view in different orientations.
Bluetooth connectivity is listed for pairing with a phone or tablet.
The listed dimensions are compact at 4"L x 3.5"W.

Technical specifications

14 specifications

Identity
Brand	Fowler
Model	544225000

Dimensions and installation
Dimensions listed	4"L x 3.5"W
Weight listed	5.6 ounces

Materials and protection
Material listed	Aluminum

Measurement and display
Measurement accuracy	+/-0.0005%
Display	Backlit display
Display orientation	Display automatically inverts
Angle display	360° digital inclination display

Connectivity and operation
Connectivity	Bluetooth connectivity to your phone or tablet
Automatic shutoff	Auto off after 5 minutes

Magnetic attachment
Magnets	Embedded magnets on sides and bottom (3.5lb. pull)

Power and warranty
Battery listing	1 Product Specific batteries required. (included)
Warranty description	Full One Year warranty offered by Fowler, an American company

What to know before buying

Listing details to confirm

The listing's power details are inconsistent: it says one product-specific battery is required and included, while the product description calls the battery USB rechargeable. Check the included battery and charging details for the selected listing. The description also claims Tilt% and IP54 protection, while the feature list does not confirm these. The stated measurement accuracy is a listing claim, not an independently verified result.

What’s in the box

Included

Item

Who is it for?

A good fit for

Users who want a compact digital protractor with built-in magnets for work on compatible metal surfaces.
Buyers who value a backlit, self-inverting display and listed Bluetooth connectivity.

Less suited to

Buyers who need independently verified measurement accuracy or confirmed details about battery and charging configuration before purchase.

Fowler MINI-MAG Plus Digital Protractor 54-422-500-0 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 22 ratings

5 stars78%78%
4 stars11%11%
3 stars7%7%
2 stars4%4%
1 star0%0%

Aggregate ratings lean positive, with most ratings in the five-star category, but the available data does not include written feedback. The rating pattern alone cannot show how users experienced accuracy, Bluetooth, the magnetic hold or battery operation, so buyers needing performance detail should not treat it as confirmation of those claims.

Frequently asked questions

Does the Fowler MINI-MAG Plus have magnets?

Yes. The listing describes embedded magnets on the sides and bottom and gives a 3.5 lb. pull claim.

Does it connect to a phone or tablet?

Bluetooth connectivity to a phone or tablet is listed. The supplied information does not specify an app or compatibility details.

What is the listed accuracy?

The listing states +/-0.0005%. Treat this as a product claim rather than an independently verified measurement.

What should I know about its battery?

The listing says one product-specific battery is required and included. The product description separately calls it USB rechargeable, so confirm the battery and charging details for the selected listing.