What size battery does it take?

Hi, the battery model is CR2032，3v

How do you switch between inside and outside radius on this thing? Pressing the "Mode" button just switches radius to angle, not radius to radius.

Yes, the MODE is the switch between radius and angle, the switch between inside and outside radius is automatic conversion, when the display shown R1 is inside radius is ,R2 is outside radius

Does it come with any certificate of accuracy or traceability to nist or other nationally recognized metrological institutes such as asme, astm, etc.?

Hi friend: Sorry for it does not.

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CGOLDENWALL High accuracy digital radius gauge Electronic Inside and Outside Radius Gage with 10mm /20mm /30mm /60mm/100mm changeable measuring jaw Black 0.2" - 27.5"/5 mm - 700 mm

CGOLDENWALL High accuracy digital radius gauge Electronic Inside and Outside Radius Gage with 10mm /20mm /30mm /60mm/100mm changeable measuring jaw Black 0.2" - 27.5"/5 mm - 700 mm

Product ID: 26399665

💻Data port for seamless PC connectivity

📏0.005mm ultra-fine resolution

🔄5 interchangeable jaws for versatile radius range

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Description

📐 Measure Like a Pro, Lead Like a Boss

COMPACT POWERHOUSE - Handheld, lightweight design fits perfectly in your toolkit—ready for daily precision on mechanical, wood, or steel molds.
CRYSTAL CLEAR READINGS - Large HD display shows inner/outer radius, arc height, and units in both metric and imperial.
SEAMLESS DATA INTEGRATION - Connect directly to your computer for instant data transfer and streamlined workflow.
VERSATILITY AT YOUR FINGERTIPS - Switch effortlessly between 5 jaw sizes (10-100mm) to tackle any radius from 5mm to 700mm.
PRECISION THAT COMMANDS RESPECT - Experience pinpoint accuracy with 0.005mm resolution for flawless measurements every time.

The CGOLDENWALL Digital Radius Gauge delivers professional-grade precision with a 0.005mm resolution and a broad radius range of 5-700mm. Featuring 5 interchangeable jaws, a large HD display, and PC connectivity, it’s engineered for versatile, fast, and accurate inside/outside radius measurements across industries. Compact and user-friendly, it’s the essential tool for managers and engineers who demand flawless results and efficient data handling.

Specifications

ASIN	B0127I4KHQ
Best Sellers Rank	#173,546 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #18 in Radius Gauges
Color	Black
Customer Reviews	3.6 3.6 out of 5 stars (24)
Date First Available	July 21, 2015
Item Package Quantity	1
Item Weight	1.63 pounds
Manufacturer	CGOLDENWALL
Material	Metal
Package Dimensions	11.81 x 8.03 x 2.91 inches
Part Number	FF89

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€ 304.35

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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