Daniel, Certainly, Chinese factories measure in millimeters! And they do make parts from original non-metric specifications.
My experience is that this process leads to poorly fitting parts if the tolerances are too lax. e.g. unsatisfactory garden hose fittings. Google “CNC Machine Tools in China." On Dec 12, 2015, at 2:22 PM, Daniel Jackson <daniel_jack...@cox.net<mailto:daniel_jack...@cox.net>> wrote: Chinese factories don’t measure in increments of 25.4 mm. From my experience, they have no problem taking an inch based drawing, converting it to millimetres, then round the number to the nearest millimetre within the tolerance band. The Chinese make 4 x 8 foot plywood boards for the US as 1220 x 2440 mm. Neither of these values is an increment of 25.4 mm. Also check out these tire rims all claimed to be inches: http://teamrc17.net/.../projects/wheels/wheel_conversion.jpg<https://urldefense.proofpoint.com/v2/url?u=https-3A__l.facebook.com_l.php-3Fu-3Dhttp-253A-252F-252Fteamrc17.net-252Ftech-252Fprojects-252Fwheels-252Fwheel-5Fconversion.jpg-26h-3DLAQF-5FY3oT&d=BQMFAg&c=8hUWFZcy2Z-Za5rBPlktOQ&r=BpxbfWo0gcPQHL0R58p0D96tVlzZlsjR_iWGK6ETi80&m=hFOK4tuVbgjBESC_Ykjgj1NKlylUCSqdTto8J7eZz9k&s=LJ99dyUt3pREZWG24MoewLkXE2_Bqz23h3fqJSnyrNw&e=> http://i01.i.aliimg.com/img/pb/831/494/446/446494831_066.jpg<https://urldefense.proofpoint.com/v2/url?u=https-3A__l.facebook.com_l.php-3Fu-3Dhttp-253A-252F-252Fi01.i.aliimg.com-252Fimg-252Fpb-252F831-252F494-252F446-252F446494831-5F066.jpg-26h-3DiAQGI3K03&d=BQMFAg&c=8hUWFZcy2Z-Za5rBPlktOQ&r=BpxbfWo0gcPQHL0R58p0D96tVlzZlsjR_iWGK6ETi80&m=hFOK4tuVbgjBESC_Ykjgj1NKlylUCSqdTto8J7eZz9k&s=p-XI2VVxMhzGBrK9UJWkaCQS2ph0-hZdgd7QenbpQJk&e=> http://i01.i.aliimg.com/img/pb/772/659/876/876659772_592.jpg<https://urldefense.proofpoint.com/v2/url?u=https-3A__l.facebook.com_l.php-3Fu-3Dhttp-253A-252F-252Fi01.i.aliimg.com-252Fimg-252Fpb-252F772-252F659-252F876-252F876659772-5F592.jpg-26h-3DZAQHaEfzz&d=BQMFAg&c=8hUWFZcy2Z-Za5rBPlktOQ&r=BpxbfWo0gcPQHL0R58p0D96tVlzZlsjR_iWGK6ETi80&m=hFOK4tuVbgjBESC_Ykjgj1NKlylUCSqdTto8J7eZz9k&s=XugtkrwnOwOy4awxfX_LGFzFx3ZHFstmPU5Yq632oWI&e=> http://i01.i.aliimg.com/img/pb/231/662/447/447662231_174.jpg<https://urldefense.proofpoint.com/v2/url?u=https-3A__l.facebook.com_l.php-3Fu-3Dhttp-253A-252F-252Fi01.i.aliimg.com-252Fimg-252Fpb-252F231-252F662-252F447-252F447662231-5F174.jpg-26h-3D2AQFZppC4&d=BQMFAg&c=8hUWFZcy2Z-Za5rBPlktOQ&r=BpxbfWo0gcPQHL0R58p0D96tVlzZlsjR_iWGK6ETi80&m=hFOK4tuVbgjBESC_Ykjgj1NKlylUCSqdTto8J7eZz9k&s=HzU7j782H8TpbjGSMs1rsmuF7SBu8VZf5uT34kBw_1Q&e=> http://i01.i.aliimg.com/img/pb/033/077/525/525077033_155.jpg<https://urldefense.proofpoint.com/v2/url?u=https-3A__l.facebook.com_l.php-3Fu-3Dhttp-253A-252F-252Fi01.i.aliimg.com-252Fimg-252Fpb-252F033-252F077-252F525-252F525077033-5F155.jpg-26h-3DYAQGegD2J&d=BQMFAg&c=8hUWFZcy2Z-Za5rBPlktOQ&r=BpxbfWo0gcPQHL0R58p0D96tVlzZlsjR_iWGK6ETi80&m=hFOK4tuVbgjBESC_Ykjgj1NKlylUCSqdTto8J7eZz9k&s=mqCGbdfeQqEzPXSMHmlh8OxWVotGYlLL5qy6EhtA8Rw&e=> http://www.coilsprings.org/.../2015/01/7.5-20-drawing.jpg<https://urldefense.proofpoint.com/v2/url?u=https-3A__l.facebook.com_l.php-3Fu-3Dhttp-253A-252F-252Fwww.coilsprings.org-252Fwp-2Dcontent-252Fuploads-252F2015-252F01-252F7.5-2D20-2Ddrawing.jpg-26h-3DmAQEKHKN5&d=BQMFAg&c=8hUWFZcy2Z-Za5rBPlktOQ&r=BpxbfWo0gcPQHL0R58p0D96tVlzZlsjR_iWGK6ETi80&m=hFOK4tuVbgjBESC_Ykjgj1NKlylUCSqdTto8J7eZz9k&s=kHT6iOPCwIdhixkLWuHQSUPIoMGNe7Y79IJSkHFH2OQ&e=> All sensible metric values.
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