What is the measurement range? I need to know the very smallest inside diameter it can measure as well as the largest.

The smallest inside will depend how deep you go, but close to surface I would say 1mm or even less. It goes up to 150mm.

could I use this to measure nut size so as to get the right socket?

Yes, you can. Measure the diameter of the nut from one flat side to the opposite flat side. That will be the size of the nut.

what are the drops and diamond images on the ruler for?

The RedBlack-01 has drops on the ruler and the RedBlack-02 and RedBlack-03 versions have drops and diamonds on the ruler. I do not think they are for anything specific, other than decoration. The ruler is only necessary on dial calipers, because the dial only shows sub-inch measurements. On a dial caliper, you add the dial number to the inch number showing on the ruler to get the full measurement. On digital calipers, the full measurement is shown on the display. The ruler is left-over from the older dial calipers most likely for tradition. Therefore, I'm assuming that the diamonds and drops are just for decoration.

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Digital Caliper, Adoric Calipers 0-6 Inch, Inch/mm Conversion, Large LCD

Product ID: 760522374

Details

Brand
Adoric
Material
Plastic
Measurement Accuracy
±0.2mm/±0.01”
Product Dimensions
9.45"L x
Range
0-6 inches

📏0-6 inch / 150 mm range

🔍±0.2 mm accuracy

🖥️Large LCD display

R$132

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📐 Measure Like a Boss — Precision Meets Efficiency!

SMART ZERO SETTING - Reset measurements anytime with a simple touch, perfect for differential measuring and complex tasks.
CRYSTAL CLEAR READINGS - Large LCD screen ensures quick, error-free measurements even in low light or busy workspaces.
ENERGY EFFICIENT AUTO OFF - Battery-saving auto shutdown after 5 minutes keeps your tool ready when you are—no wasted power.
SEAMLESS INCH MM CONVERSION - One-button toggle saves time and eliminates guesswork—switch units instantly like a pro.
PRECISION AT YOUR FINGERTIPS - Measure inside, outside, depth, and step with ±0.2 mm accuracy for flawless DIY and professional projects.

The Adoric Digital Caliper offers a versatile 0-6 inch (0-150 mm) measuring range with high precision (±0.2 mm), four measurement modes (inside, outside, depth, step), and a large, easy-to-read LCD. Its quick inch/mm conversion and zero-setting functions streamline your workflow, while the auto-off feature conserves battery life. Ideal for DIY enthusiasts, professionals, and hobbyists seeking reliable, accurate measurements every time.

Specifications

ASIN	B07DFFYCXS
Best Sellers Rank	#377 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Digital Calipers
Brand	Adoric
Brand Name	Adoric
Customer Reviews	4.5 out of 5 stars 38,055 Reviews
Included Components	digital caliper
Item Dimensions L x W	9.45"L x 3.07"W
Item Highlight	Caliper Measuring Tool, Auto-Off Feature, 4 Modes for Inside/Outside, Depth, Step; for DIY, Household Use, Jewelry, Hobby
Item Weight	0.07 kg
Manufacturer	Guilin ahead measuring tool manufacturing co.,ltd
Material	Plastic
Material Type	Plastic
Measurement Accuracy	±0.2mm/±0.01”
Model	KC24
Number of Batteries	1 LR44 batteries required.
Number of Items	1
Part Number	B07DFFYCXS
Product Dimensions	9.45"L x 3.07"W
Range	0-6 inches
Set Name	Adoric Digital Caliper Series
Unit Count	1 Count

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