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(B) Fortin’s Barometer Standard
With Metric and English system scales reading 25†to 32†and 64cm to 81cm with reflectors behind scale and cistern. Vernier operating with rack and pinion, reads 0.1 “ and 0.1cm, with Brass parts & brass pipe with Iron screw routing type.
(B) Fortin’s Barometer Standard
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(B) Fortin’s Barometer Standard