1747. A Thompson Blue Box cover for chain handcuffs, it keeps keyholes covered for top security transporting of prisoners.
The inside top and bottom both look the same:
1748. A screw plate, used to cut, straighten or clean threads on a machine screw.
1749. A Frigidaire freezer ice scraper
1750. An accident report symbols template for use by the police, text was removed from below the symbols for witness, cycle or body, and impact point.
1751. A cigar cutter:
1746. An Addressograph Graphotype machine for embossing text on metal, probably for military dog tags.
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Last week's set is seen below, click here to view the entire post.
More discussion and comments on these photos can be found at the newsgroup rec.puzzles. Glenwood Gardens Park