Experts on appraising ancient writing (such as Ryosa KOHITSU) called kohitsuka, kohitsumi, and simply kohitsu carried tekagami which contain representative kohitsugire stuck on hojo (copybook printed from the works of old masters of calligraphy) to be used as standards for appraisals.
また、古筆家、古筆見、あるいは単に古筆と呼ばれた古筆鑑定の専門家（古筆了佐など）は、鑑定の標準とすべき代表的な古筆切を法帖に押した手鑑を携行した。