Review on ChgImposs Imperial Whitworth Industrial Measurement: Accurate and Efficient Tools for Precision Engineering by Viterbo Dashora

I saw "Metric & Imperial" and thought ok there will be normal liberty units. But I also saw Whitworth and thought why not, it doesn't hurt. But I think the "imperial" form that the description is referring to is the Whitworth form, which if you think about it is a thread form that is not metric, that is, it is _one of_ the "imperial" ones To form. thread forms. Here's what you get: Metric and Whitworth British Standard. Not to mention that I am the ideal buyer for this product as I already own a pair of perfectly working thread gauges for standard 60 degree American teeth. I was only missing the metric part. And since I had regular American units covered, it seemed normal to add exotic antique British threads to my options. I think this form of Whitworth (the first standardized form of carving I think) would be useful if you were an antique restorer/collector. These threads were on old bikes, engines, machine tools, etc. I think you could use this to check bolts for threads per inch at regular American hardware stores, but I'd be careful holding them up to the light and trying to be precise to achieve carving. Metric side, the reason I bought it seems good. I even liked the fact that they use the German word for "Metrik" - if you live in the US, using Metrik is like vacationing abroad in a beautiful place. Some people have complained about the visibility of the markers. My eyesight isn't usually very good for things like this, but I can see markings just fine without my regular magnifying glass. They are not faintly printed but appear to be solid stamps. I checked the rough M4, M5 and M6 threads and they all turned out to be absolutely correct. I can't confirm that all values are good, but these are the three most common ones that bother me. For the price, this tool is a steal.