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Insert A Model 3150-2 (variety block): 1/2”, 1/4”, 3/8”, 3/16”, 1/8”, and
1/16” holes
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Insert B Model 3150-3 (comparison block): two each 3/8”, 1/4”, and
3/16” holes
or
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Insert C Model 3150-4 (1/4” comparison block): six 1/4” holes
9150 Portable Furnace
User’s Guide
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