Flexigroup - Produces custom printed and shaped slide charts and wheel charts for promotion and advertising purposes. - http://www.flexigroup.com/
Datalizer Slide Charts, Inc. - Offers custom slide charts, wheel charts, slide rules, and technical calculators as marketing and promotional tools. - http://www.slidecharts.com/
Blundell Harling Limited - Manufacturers of custom imprinted medical slide charts and data wheels for promotion and advertising. - http://www.blundellharling.co.uk/
IWA Slide Charts - Designs and manufactures custom slide charts, wheel charts, data slides and templates. - http://www.iwaslidecharts.com/