Wempe Replacement Faser Scribe: For unparalleled precision from your Wempe drum barograph. Refine the performance of your Wempe drum barograph with this advanced replacement pen, also known as a Faser Scribe. Designed for the CW810002 model, this pen increases the accuracy of your atmospheric measurements and takes your weather recording to a higher level. An indispensable addition for the demanding user who wants to capture every detail of air pressure changes. Order today and experience the difference in precision this pen offers.