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Average Least Dimension Gauge
This gauge is a heavy-gauge sheet-steel plate fitted with seven parallel-sided elongated slots of pr..
Glass or Metal Container of at Least 1,000ml Capacity Sufficiently Strong to Withstand a Partial Vacuum, with a Cover Fitted with a Rubber Gasket and a Hose Conection. Fine Wire Mesh Shall Cover the Hose Opening to Prevent Loss of Fines. the Top Surfac...
This is a thick-walled glass filter flask, 1000ml capacity, with side-tubulation for vacuum tubing a..
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