For information about Moiré Tell-Tales and to order, please visit our dedicated web site.

For all other queries please email us at bill@obvis.com or call on +44 787 942 5884.

Bill Harvey Associates Limited is UK Company 04550257, VAT No. GB 760 2715 45.

Registered address: Gairloch, Hensleigh Drive, Exeter, EX2 4NZ, UK

Our sister company Obvis Limited sells the masonry arch analysis software Archie-M.