Thanks for the reply, These will be either sent out or the ones that can be done onsite like calipers and hand tools will be done onsiteAre you calibrating equipment internally or sending out to a calibration shop? If the latter, the SOP can be pretty simple (effectively just echoing the standard). If the former, you'll need probably an over-arching SOP (reflecting the standard) and WIs for the specific calibration work.
These will be tools like calipers and such, most items can be calibrated onsite, some will have to be sent out for service.