Physical description
Engineers T tap wrench of metal, with 1/4 inch thread tap. Incised on tap, '1/4 20 WHIT Made in England', and on wrench, a triangular design containing the letters GTD, and below, K
Inscriptions & markings
On tap, '1/4 20 WHIT Made in England|On wrench, 'GTD' AND 'K'
