Friemann

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Friemann & Wolf Pieler Lamp Model 701

This particular model of Friemann & Wolf is the rarest of the three models advertised: the 700, 701, & 702.  This lamp is essentially a model 700 with a smooth bonnet.  And, like the model 700, it only measures up to 1 1/2 % methane.  The serial number on the lamp is 783,005.  It is fitted with a model 1897 igniter, and a flame snuffer.  This lamp is about 1905 vintage, and is unfired.