On 2016-04-20 06:59 PM, James Knott wrote: > >> One chain is 66 feet, > > Or 20 metres.
… if you're not fussy about 117 mm difference. Surveyors tend to be. The only unit of measurement I know of that was deliberately designed to be friendly for both metric and not-metric* is the HP-GL unit. It's 1/40 mm, or exactly 1/1016 inch. Stewart *: there are so many variants that there isn't one brief useful term for it. --- Talk Mailing List [email protected] https://gtalug.org/mailman/listinfo/talk
