DISCHARGE PIPE FOR VAULTS. BEARD'S DISCHARGE PIPE FOR VAULTS. CHECK ROW CORN PLANTER. 4 pg. Exports of Wheat. WATCHCASE SPRING. STUFFT'S WATCHCASE SPRING. 41 1 A Gravity Spring Balance. MEASURING WHEEL. ?WALED'S MEASURING WEEEL. DRAWER CHECK AND SUPPORT. FRASER'S DRAWER CHECK AND SUPPORT., scientific american, 1886-07-31
DISCHARGE PIPE FOR VAULTS. BEARD'S DISCHARGE PIPE FOR VAULTS. CHECK ROW CORN PLANTER. 4 pg. Exports of Wheat. WATCHCASE SPRING. STUFFT'S WATCHCASE SPRING. 41 1 A Gravity Spring Balance. MEASURING WHEEL. ?WALED'S MEASURING WEEEL. DRAWER CHECK AND SUPPORT. FRASER'S DRAWER CHECK AND SUPPORT., scientific american, 1886-07-31
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