A "douzieme-style", metric caliper gauge for six dollars

[ChrisInOz]

I just took delivery of one of these from Ali X.  I took a punt on it at the price of less than AUD $6, (£3),   including shipping,  and I'm pleased to say that the quality looks reasonably good. 

It works in the manner of a douzieme gauge,  but is marked in 0.1 mm increments.

 

The scale is marked on both sides,  so it can be used in a left or right handed way.

I know that these are not as accurate as a micrometer,  but there are many places where a micrometer will not fit, for example, measuring the thickness of a barrel end cap. 

It would also be handy for repeated quick measurements,  such as when turning a pivot down to a required diameter.

The scale is marked in 0.1 mm increments,   and I would think that it should be possible to read it to an accuracy of 50 microns with some care.

It appears to be made of steel.  There are a few sharp edges where it has been machine cut but not chamfered. A light touch with emery paper would take care of that. The jaws could probably do with being dressed a little,  but they are flat and parallel at the point where they meet.

I plan to measure a few items and compare the readings on this with micrometer measurements.  I will add my results to this thread when I have done it.

Here's a link to where I bought it if anyone is interested.