Giant Abacus The Giant Abacus, a fun and educational asset for your playground. Chunky and durable. All components are weatherproof and suitable for outdoor use. Tanalised treated Scandinavian Redwood frames for long life. Zinc plated fixings. Post and wall mounted options are available. Wall Mounted options delivered fully assembled. Post Mounted options delivered part assembled. For self installation. Delivery costs included. Length 86cm Width 13cm Height 78cm Total Height 130cm