The Only Clock Of It's Kind
90° Test Pattern On Each Chart
7 Fast / Slow Speeds
5 Regular Speeds

The most versatile Chart Drive for Gas Volume Recorders and for all Event and Flow Recorders.	Point here to view Fast/Slow dial
Special chart papers with fast / slow grid design corresponding to the clock speed settings are now available from Sonzeboz stock. Sonceboz Fast/Slow Chart Paper Exclusively designed for type 830 chart drive LINEAR 0-100 DESCRIPTION ROTATION SQUARE ROOT L10 Part No. 830P010 7 Day 6 Hrs. - 90° 6 Day/18 Hr. - 270° Part No. 830P016 Part No. 830P011 8 Day 6 Hrs. - 90° 7 Day/18 Hr. - 270° Part No. 830P017 Part No. 830P012 7 Day 24 Hrs. - 90° 6 Days - 270° Part No. 830P018 Part No. 830P013 8 Day 24 Hrs. - 90° 7 Days - 270° Part No. 830P019 Part No. 830P014 16 Day 24 Hrs. - 90° 15 Days - 270° Part No. 830P020 Part No. 830P015 31 Day 24 Hrs. - 90° 30 Days - 270° Part No. 830P021	Click here for weekly chart Click here for monthly chart