In first with the 'you Commies SOB's' trope.
Seriously, what you gonna do, most of the digitals are imported.
This is the listed accuracy for the one LL linked: Accuracy: ±0.05mm (roughly 0.001968504in.) So essentially + or - 0.002 accuracy.
Here's a digital with .001in accuracy and a NIST certificate for $57.99: https://www.travers.com/6-electronic.../p/57-016-075/ NIST Certificate of Calibration, meaning that the item was tested to be within its stated tolerance of accuracy
Affordable dial calipers generally have graduations of .001in and are accurate + or - 0.001, admittedly, they aren't as handy as the digital ones.