Normal siphon tube for wheel barometers including glass guide tube and weights, 33 1/2" Made from 10mm tube joined to 7mm capillary Pyrex glass, kiln annealed for strength.
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Extra large bore siphon tube for Georgian barometers or large dials, with guide tube and weights, 33 1/2" Made from 13mm tube joined to 9mm capillary tube in Pyrex, kiln annealled for strength.
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Ball pediment tube (cork fitting) 3/8" (9mm) x 33 1/2"
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Ball pediment tube (cork fitting) 1/2" (12mm) x 33 1/2"
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Old style ball pediment tube (side hole) 1/2" (12mm) x 33 1/2"
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Admiral Fitzroy tube 3/8" (9mm) x33 1/2"
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Admiral Fitzroy tube 1/2" (12mm) x33 1/2"
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Straight glass cane 3/8" (9mm) x 36"
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Straight glass cane 10mm o/d x 36"
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Straight glass cane 11mm o/d x 36"
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Straight glass cane 1/2" (12mm) x 36"
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Straight glass cane hand pulled when available 14mm and over
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Slightly restricted marine tube 3/8" (9mm) o/d at top, 1mm capillary restriction
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Joined tube, made to order, send dimensions required for price
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Straight cane with airtrap, made to order, send dimensions required for price
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Kew/Fortin glass scale tube 1 1/8" (30mm) o/d x 9" long other sizes available
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Filling kit (syringe and catheter tube) standard 1.27mm o/d 1100mm long. Very useful for filling our new syphon tubes, can often be used for other tubes if the glass bend is not squashed. Must be used carefully and then will normally last many times.
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