Hi,today we are offering this Digital Caliper for you at a good price—only $5.59 with free shipping.
This a useful tool for measuring threads,holes,bits,pipes,etc.
Description:
Made of extra strong carbon fiber composites,lightweight and durable.
Measureing range: 0-150mm (0-6 inches).
Resolution: 0.1mm (0.01 inch)
Accuracy: ±0.2mm/0.01"
Maximum measuring speed: 1.5m/sec (60inch/sec)
Measuring system: Non-contact linear CAP measuring system
Display: LCD display, 4 digits character.
Power: SR44/LR44 1.55v
Operating Temperature: 0~40
Storage Temperature: -20~70
Included:
1x Carbon Fiber Composites Digital Caliper
Pretty sure they'll be OK for non-critical stuff. I very recently bought a couple of the cheapest stainless steel versions I could find that included a storage case & battery ($16.49 each - http://www.ebay.com.au/itm/151106990751?ssPageName=STRK:MEWN…) and as long as I hit the reset button before measuring they seem to be very, very accurate.
I didn't need extreme accuracy either but didn't go for the carbon/plastic version as I wanted something that could take a bit of a beating in the workshop plus I wanted the case to keep them protected when banging around in a drawer with other tools. I'm sure for general purposes these cheapies would be fine for your needs.