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→Screw posts
==Screw posts==
==Screw posts==
Screw posts could inserted into three hole punched paper. Publishers would use either two or three posts, depending on the stability they needed.
Screw posts were inserted into three hole punched paper. Publishers would use either two or three posts, depending on the stability they needed.
[[Image:Screwpost.jpg|thumb|screw posts]]
[[Image:Screwpost.jpg|thumb|screw posts]]
[[Image:Spocksscribes.jpg|thumb|example in use ([[Nimoyan-Spock's Scribes]]), note the center screw post is either missing or not in use]]
[[Image:Spocksscribes.jpg|thumb|example in use ([[Nimoyan-Spock's Scribes]]), note the center screw post is either missing or not in use]]