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, Caliper Measuring Tool, Stainless Steel Micrometer

Kynup Digital Caliper, Caliper Measuring Tool, Stainless Steel Micrometer

Product ID: 168108713

Details

Brand
Kynup
Material
Stainless
Number of Batteries
3 Lithium
Product Dimensions
3.5"L x 9.5"W
Range
1.5E+2

📏±0.001" / 0.02mm precision

🔋Smart auto-off for battery life

🛠️6-inch heavy-duty stainless steel

€ 51.42

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📐 Measure Like a Boss — Precision Meets Power in Your Palm

POWER SMART WORK SMARTER - Intelligent auto-off feature preserves battery life so your tool is always ready when you are.
COMPLETE KIT FOR INSTANT USE - Includes extra batteries, mini screwdriver, and a protective case—perfect for 3D printing, woodworking, and automotive pros.
BUILT TO LAST DESIGNED TO IMPRESS - Forged from polished stainless steel, this caliper resists warping and delivers a solid, premium feel in your hand.
PRECISION THAT PROFESSIONALS TRUST - Engineered for ultra-accurate measurements down to ±0.001"/0.02mm, ensuring flawless results every time.
EFFORTLESS READINGS ANYTIME ANYWHERE - Oversized LCD screen with quick-switch modes (Inch, Metric, Fraction) eliminates guesswork and eye strain.

The Kynup Digital Caliper is a professional-grade 6-inch measuring tool crafted from heavy-duty stainless steel, delivering precision up to ±0.001"/0.02mm. Featuring a large, easy-to-read LCD with inch, metric, and fraction modes, it supports external, internal, depth, and step measurements. Its smart auto-off function extends battery life, and the included kit with extra batteries and a protective case makes it ready for immediate use in DIY, industrial, and 3D printing projects.

Specifications

ASIN	B07X8JQ8L5
Best Sellers Rank	#658 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Outside Micrometers
Brand Name	Kynup
Customer Reviews	4.6 4.6 out of 5 stars (11,814)
Item Dimensions L x W	3.5"L x 9.5"W
Item Highlight	6 Inch Dial Vernier Caliper Tool, Inch/Metric/Fraction Conversion, Auto-Off & IP54 Splash Proof for DIY & Industrial Use
Item Weight	14.1 ounces
Manufacturer	Kynup
Material Type	Stainless Steel
Model	170-2
Number of Batteries	3 Lithium Metal batteries required. (included)
Number of Items	1
Number of Packs	1
Part Number	USQC03301915
Range	1.5E+2 millimeters
UPC	791315414919 791378538942
Unit Count	1 Count

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