What's the minimum diameter of hole (inside measurement) measurable? (small jaw tips don't close to zero, it seems?)

A good question! It really depends on how deep you need to get the caliper jaws. If they only have to just be inside the internal space of the object you could certainly measure down to 1 mm. But if you needed to get a little deeper you could only measure down to 2 mm and this minimum would increase as you got deeper because of the width of the jaws. I have just tried them measuring the inside dimension of a very small nut and I managed 1mm comparitively easily.

Technical details state: "power source type: battery powered". what is a battery required for ?

If the option does not have a digital display, you do not need any battery. I gave up with digital displays as every time I went to use them, the battery was dead!

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Vernier Caliper Gauge 150mm Analog Caliper

Vernier Caliper Gauge 150mm Analog Caliper

Product ID: 99071390

Details

Brand
Spurtar
Material
Acier au
Measurement accuracy
0.03 mm
Product dimensions
24.4L x 9W
Range
1.5E+2

📏0-150mm / 0-6" range

🔄Dual Metric & Imperial scales

⚙️0.02mm / 0.001" precision

₨19248

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Description

📐 Measure Like a Pro, Every Time!

SEAMLESS DUAL SCALE READING - Switch between metric and imperial instantly—no conversions, no delays, just pure efficiency.
VERSATILITY AT YOUR FINGERTIPS - Measure outside, inside diameters, depth, and steps effortlessly—one tool, endless possibilities.
PRECISION THAT COMMANDS RESPECT - Achieve ultra-fine measurements with 0.02mm accuracy—because details matter in every project.
BUILT TO LAST DESIGNED FOR EASE - Hardened steel with smooth sliding action ensures durability and one-handed operation—no batteries needed.
YOUR ALL IN ONE MEASUREMENT COMPANION - From woodworking to automotive, this caliper adapts to your professional and DIY needs with unmatched reliability.

The Spurtar Vernier Caliper Gauge offers industrial-grade precision with 0.02mm accuracy across a 0-150mm (0-6") range. Crafted from hardened steel, it supports four measurement modes—outside diameter, inside diameter, depth, and step—while featuring dual metric and imperial scales for versatile, battery-free use. Ideal for professionals and DIY enthusiasts alike, it combines durability, ease of use, and broad application from woodworking to engineering projects.

Specifications

ASIN	B074HZ8S21
Best Sellers Rank	977 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 3 in Vernier Callipers
Brand	Spurtar
Country Of Origin	China
Customer Reviews	4.5 4.5 out of 5 stars (10,160)
Included Components	1x Vernier caliper, 1x Ruler, 1x User manual, 1x Storage case
Item Dimensions L x W	24.4L x 9W centimetres
Item Highlight	Accuracy 0.02mm/0.001" for DIY/Household/Industrial Use with Storage Case
Manufacturer	Spurtar
Manufacturer Part Number	kingcompany
Material	Acier au carbone
Measurement Accuracy	0.03 mm
Model Number	kingcompany
Number of Items	1
Range	1.5E+2
Set Name	Single
UPC	655302158944
Unit Count	1.0 count

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₨19248

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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