Digital Calipher Vernier (to 2-decimal point) - for verifying string thickness

Finally managed to obtain a reasonable cost digital calipher vernier which was accurate to 2-decimal points. Purchased it during the Black Friday sales.

As per received

The LR44 battery was pre-loaded.  Now to test for accuracy and if it was functional:-

1. Switch it on and set units to millimeter.

2. Slide the jaws to the minimum gently and press the ZERO button to calibrate it accordingly.

3. Next I slide the caliper jaws open until the display showed 5.00mm - not as easy as it seems due to the 2-decimal point accuracy.

4. Then I place it next to a ruler for comparison - ruler in centimeters (but was placed up-side down😒)

Works as advertised!

As such I was not going to return it 👍👍👍

Close-up of the ruler and caliper jaws

Awaiting a digital vernier calipher ... (***UPDATE#2***)

Purchased a unit capable of displaying up to 2-decimal points on eBay and it was suppose to have arrive by 1st week of Sept2017.

Unfortunately not arrive yet. Hence will delay the article on how thick a string really is VS the specification on the packaging. 

Am sure we have all notice on the packets of strings (from the same manufacturer & model) - some appear to be thicker visually, than the other at the shop display.

8Oct2017

eBay refunded as looks like the seller from Hong Kong was not very responsive. Seem to encounter quite a few of such issues when buying from HK sellers on eBay.

1Dec2017

Took the Black Friday opportunity to buy a digital calipher capable of 2-decimal points - fingers cross. Now awaiting delivery from the US.