1283. An Explosimeter, a safety device used to detect explosive gases in mines.
Mine Safety Appliances Company
1284. A threshing sled or threshing board from Europe, farmers would place their harvested wheat on the floor of their barn, a mule would then drag this thresher across the crop to separate the wheat from the chaff.
The person selling it was asking $495 for this sled.
1285. A shipper's hammer, it can also be used as a nail puller and a plane for removing old printed or painted addresses, patent number 566,955:
From Scotty Fulton's collection
1286. A hunter's tripod stand:
1287. A scarificator, used by doctors for bloodletting
1288. A ten-barrel .45 caliber model 1883 Gatling Gun, patent numbers 36,836 and 47,631.
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Last week's set is seen below, click here to view the entire post:
Black Ops Pro Tips
More discussion and comments on these photos can be found at the newsgroup rec.puzzles.