Check the listing for details. BAS66 100 pack MONTHLY MILLIBARS Belfort Bendix Friez Microbarograph CHARTS. Condition: New. Listed at 80.79 USD. BAS16 microbarograph chart qty. 100 MONTHLY (31 days) 965-1050 millibars for Belfort Bendix Friez Signal Corps microbarographs. Charts are available in blue-green or in red. Please specify your preference. Please note that when viewing charts on eBay, colors can vary depending on your monitor settings, and printer toner variations sometimes occur with different brands of toners. Also, please note that charts need to be cut on the dotted lines as shown on the eBay images for these charts. (Paper cutters can give you the best results.) Thank you for not leaving negative feedback which hurts my business and doesn't help you . If you have questions or concerns, please send a message and I will be happy to work with you. If you aren't sure if this chart will fit your instrument, send a message. I can design a new chart for any barograph.