(a) If any business, institution, or member of a profession or calling, in the regular course of business or activity has made, kept or recorded any writing, entry, print or representation and in the regular course of business has recorded, copied, or reproduced it by any process, including reproduction, which accurately reproduces or forms a durable medium for reproducing the original, such reproduction, when satisfactorily identified, is as admissible in evidence as the original, whether the original is in existence or not, and an enlargement