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<p>[QUOTE=&quot;Pellinore, post: 2430461, member: 74834&quot;]I bought a good quality metal caliper last year ($ 25). There was only one in the shop. Its packaging was much bleached, although the shop is not brightly lit. The guy in the iron shop rushed the thing to the counter, as if I might get doubts after all.</p><p>The caliper has sharp edges and points, but so far I scratched no coins. However, for ancient coins it is not so important to measure 0,01 mm. Most coins are not round even. So I&#039;m back to my ruler again. In fact it&#039;s a pica pole with a useful stop at the end. </p><p>[ATTACH=full]504906[/ATTACH] </p><p><br /></p><p>[ATTACH=full]504908[/ATTACH] </p><p><br /></p><p>The weight is much more important. To identify your coins a scale telling 0,1 grams is good enough. However, you should weigh them to 0,01 grams: if you have a tray of roughly the same coins, that were exactly described and weighed, and the cat upsets it - all the coins thrown on the floor! Grrr! </p><p>Well, in that case you need not be frustrated, just take your scale and re-identify them in a jiffy, using their precise weight.[/QUOTE]</p><p><br /></p>

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