2 Way Glue
£2.50 each pen (not available by mail order)
A glue pen with a 5mm chisel tip containing 10g of acid-free adhesive. Can be used to provide a permanent or temporary bond. For a permanent bond, use immediatley after application (whilst the adhesive is blue). For a temporary bond, apply lightly and use after the adhesive has become tacky (when the adhesive becomes clear).