Two Victorian novelty silver telescopic pencils

Two Victorian novelty silver telescopic pencils,

comprising; one modelled as a dome headed nail, retailed by Houghton and Gunn, by with a Thornhill registration lozenge for 1875,

not working, with a ring attachment, length 7.8cm, plus a dome headed screw, possibly by S. Mordan and Co, with a ring attachment, length 6cm, approx. weight 0.5oz. (2)