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 Caliper Measuring Tool IP67 Waterproof, Digital Caliper Outside Micrometer, 6 Inch Caliper DIY Tool, Extreme Accuracy, Stainless Steel Design, Auto Power Off, Switch from Inch Metric

Kynup Caliper Measuring Tool IP67 Waterproof, Digital Caliper Outside Micrometer, 6 Inch Caliper DIY Tool, Extreme Accuracy, Stainless Steel Design, Auto Power Off, Switch from Inch Metric

Product ID: 523596080

Details

Brand
Kynup
Material
Stainless
Measurement Accuracy
Product Dimensions
3"L x 9.29"W
Range
1.5E+2

⚡Fast Response & High Sensitivity

💧IP67 Waterproof - use underwater

🔩6-inch Stainless Steel Precision

42019 Ft

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📏 Measure Like a Pro, Rain or Shine!

WATERPROOF INNOVATION - IP67 rating lets you measure confidently even in wet or underwater conditions—no compromises.
SMART POWER MANAGEMENT - Auto power-off and sleep mode extend battery life, so your tool is ready when you are.
LIGHTNING FAST READINGS - Absolute coding system delivers instant, stable, and highly sensitive measurements every time.
PRECISION MEETS DURABILITY - Crafted with 3.5mm thick stainless steel for long-lasting, ultra-accurate measurements.
VERSATILE MEASUREMENT MODES - Easily switch between depth, step, internal, and external diameter measurements for all your projects.

The Kynup 6-inch digital caliper combines IP67 waterproof technology with a robust stainless steel body and an advanced electromagnetic induction sensor for extreme accuracy. Featuring fast response times, multiple measurement modes, and smart auto power-off, it’s engineered for professionals and DIYers who demand precision and reliability in any environment.

Specifications

ASIN	B0BS96R2FQ
Best Sellers Rank	#11,498 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Digital Calipers
Brand	Kynup
Brand Name	Kynup
Customer Reviews	4.6 out of 5 stars 42 Reviews
Included Components	Digital Caliper
Item Dimensions L x W	3"L x 9.29"W
Item Weight	0.45 Kilograms
Manufacturer	Kynup
Material	Stainless Steel
Material Type	Stainless Steel
Measurement Accuracy	±0.001”/0.02mm
Model	02-170-2
Number of Batteries	2 CR2032 batteries required.
Part Number	02-170-2
Product Dimensions	3"L x 9.29"W
Range	1.5E+2 Millimeters
Unit Count	1.0 Count

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