Design and production by Derek for TADACT Productions.
This illustration is from the 1997 Catalog which explains the semi-commercial set-up.
This design resulted from a request to TADACT by the Queanbeyan Bowling club to have some devices to enable some amputee members to play bowls without damaging the greens.
This was passed over to TADACT Productions as it was unreasonable to expect volunteers to produce large quantities of products on a voluntary basis and at cost only. Eventually the catalog had 27 designs available on a batch production basis at very low non-profit cost which was able to satisfy the local need for these items. It was a very successful venture.
Eventually over 20 had been produced by the time I retired in 1991 from TADACT and TADACT Productions, but the stimulus was not there and it was discontinued.