How do you set the display where all the numbers are big? it shows a picture where there all big?

There is a select button to cycle though a choice of display options. There is also a zero button along with an on/off button (if my 78 y.o. memory serves me correctly). If that doesn't do what you want, I'm out of guesses. One observation might be that only whole and NOT fractional numbers appear large. Hope this helps.

What size screw is needed for battery cover? I tried jeweler screws but they are too small. I lost mine replacing battery.

I'm not sure but if you go to lowes or tractor supply I'm sure you'll find what you need fairly easy.

What is the casing of the digital readout made of? Plastic or metal?

The description says the housing is made of metal with a silver paint finish. Feel and weight suggests metal construction. It is heavier than others I have that are plastic.

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Kynup Digital Caliper Measuring Tool, 12 Inch Stainless Steel Micrometer

Kynup Digital Caliper Measuring Tool, 12 Inch Stainless Steel Micrometer

Product ID: 455219620

Details

Brand
Kynup
Material
Stainless
Measurement Accuracy
±0.001”
Number of Batteries
1 CR2032
Product Dimensions
13.5L x 43W

💧IP54 splash-proof stainless steel

📏12-inch/300mm range

🔧±0.0015”/0.03mm accuracy

Description

📐 Measure Like a Pro, Every Time!

BUILT TO ENDURE - Crafted from premium stainless steel with IP54 splash-proof protection—built tough for any workspace environment.
PRECISION PERFECTED - Experience ultra-accurate measurements down to ±0.0015”/0.03mm, ideal for professional and DIY projects alike.
TRIPLE UNIT MASTERY - Seamlessly switch between inches, millimeters, and fractions with a single button—precision your way.
SMART POWER MANAGEMENT - Auto on/off feature conserves battery life, so your caliper is ready when you are—no more dead tools.
VERSATILE MEASURING MODES - Measure depth, step, internal and external diameters effortlessly with four distinct measuring methods.

The Kynup 12-inch digital caliper combines professional-grade precision (±0.0015”/0.03mm) with durable IP54 splash-proof stainless steel construction. Featuring a large LCD screen and easy unit conversion between inches, millimeters, and fractions, it offers versatile measuring modes for depth, step, internal, and external dimensions. Designed for longevity and convenience, it includes auto on/off functionality and runs on a common CR2032 battery, making it the perfect tool for professionals and serious DIYers seeking reliable, accurate measurements.

Specifications

ASIN	B09KGHRKHY
Brand Name	Kynup
Country of Origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (1,144)
Included Components	Screws
Item Dimensions L x W	13.5L x 43W Centimeters
Item Highlight	Vernier Dial Caliper Tool with Inch/Metric/Fraction Conversion, Auto-Off & IP54 Splash Proof for DIY & Industrial Use
Item Weight	1.62 Pounds
Manufacturer	Kynup
Material Type	Stainless Steel
Measurement Accuracy	±0.001”
Model Number	170-4
Number of Batteries	1 CR2032 batteries required. (included)
Number of Items	1
Part Number	12INDCQC10271007
Unit Count	1.0 Count

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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