frankly speaking , as per my knowledge for shop use no instrument is there . but you can buy ready comparator in which different steel surfaces are available for different AARH values. you have to compare your product surface with that standerd prepared surface by hand and visual inspection and decide whether your product meet the required range or not. i am waiting for other experts view on this.
thanks
ansari.
On Wed, May 30, 2012 at 3:29 PM, K.M Hrishikesan <hrishikm07@gmail.com> wrote:
HiI need following precise information urgently..Which instrument/comparator can I use to check the serration of flange face (ideally for 125 to 250 AARH)Kindly mention the make, brand etcThanksHrishi--
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Regards
Ansari Intekhab Alam
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