Reading this post just made me buy this:
I don't know about reliability, but compared to the iGage, the features appears to be the same. It has stainless steel body and lower price as an incentive.
Furthermore, there are a lot of good rating.
I almost bought the following since it's cheaper, looks and features almost exactly the same, just different name, but the reviews and rating are lower, so for a few bucks, I decided to go with the above:
Buy UBANTE Quality Electronic Digital Caliper Inch/Metric/Fractions Conversion 0-6 Inch/150 mm Stainless Steel Body Orange/Black Extra Large LCD Screen Auto Off Featured Measuring Tool: Digital Calipers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
For many years, I used a cheapo around $10 harbor freight, and it worked great for me, to my surprise. Sometimes the numbers jumped around showing some very interesting hidden features, and I took out/put back the batteries and it works again.
The plastic slide dial broke off and I still used it. But it's not very convenient. I didn't do much high precision things and as a result, high precision wasn't a big concern, and I thought a mic would do that anyway.
I do hope for auto shutoff to save battery and in accidentally turn on.
I also happen to have a manual caliper part of some lot purchase I bought. It's stainless Helio brand, made by Germany. It got stuck alot. So I cleaned up the "gear", and it worked better. That part is something I don't like, the gear makes it easy to be contaminated.
The bad part is that 2 of the 3 very tiny screws fell off of the screen. Maybe I need to visit a watch repair shop for this.
The funny thing is that if I put the screen back "evenly", it would get stuck. So it's at an angle. I would need to fix it before putting the two screws back on. But buying the digital above, I wonder if I ever will fix this. It's great that I don't need battery for it. So maybe it's a good backup.