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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digital caliper, caliper measuring tool with stainless steel, IP54 waterproof protection design, easy to switch between inch/metric/fraction, large LCD screen (150 mm)

Product ID: 289660351

Details

Brand
Kynup
Material
Stainless
Product dimensions
15L x 15.2W
Range
150

💧IP54 splash & dust resistant

📏6-inch precision range

🔢0.0005" / 0.01mm ultra accuracy

S$65

Duties & taxes included

In stock

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Description

📐 Measure Like a Pro, Every Time!

BUILT TO BRAVE THE ELEMENTS - IP54-rated stainless steel body ensures splash and dust resistance for rugged job site reliability.
PRECISION THAT COMMANDS RESPECT - Experience pinpoint accuracy down to 0.0005 inches for flawless measurements every time.
SMART AUTO SHUT OFF FOR BATTERY LIFE - Conserves power by turning off after 5 minutes of inactivity, keeping you ready when precision calls.
CRYSTAL CLEAR READINGS ON A LARGE LCD - No more squinting—read measurements instantly on a bright, easy-to-read display.
EFFORTLESS METRIC IMPERIAL SWITCHING - Seamlessly toggle between inches, millimeters, and fractions with a single button press.

The Kynup Digital Caliper is a 6-inch stainless steel measuring tool engineered for professionals who demand precision. Featuring IP54 splash and dust resistance, an ultra-accurate 0.0005-inch resolution, and a large LCD screen with easy unit switching, it delivers reliable, quick measurements in any environment. Its smart auto shut-off extends battery life, making it an indispensable tool for engineers, designers, and makers who refuse to compromise on accuracy.

Specifications

ASIN	B07X8JQ8L5
ASIN	B07X8JQ8L5
Batteries	3 Lithium Metal batteries required. (included)
Best Sellers Rank	#24,520 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #32 in Digital Calipers
Brand Name	Kynup
Customer Reviews	4.6 4.6 out of 5 stars (8,994)
Customer reviews	4.6 4.6 out of 5 stars (8,994)
Date First Available	13 November 2019
Item Dimensions L x W	15L x 15.2W centimeters
Item Weight	0.19 Kilograms
Item model number	170-2
Manufacturer	Kynup
Manufacturer	Kynup
Material Type	Stainless Steel
Measurement Accuracy	The measurement accuracy of the Kynup Digital Caliper is +/- 0.0005 inches (or 0.01 mm). This indicates that measured value would be expected to fall within true with a high degree confidence.
Model	170-2
Number of Batteries	3 Lithium Metal batteries required. (included)
Number of Items	1
Number of Packs	1
Part Number	USQC03301915
Product Dimensions	8.89 x 24.13 x 0.1 cm; 190 g
Range	150 millimeters
UPC	791315414919 791378538942
Unit Count	1.0 Count

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