Filing-jig for box locks
Bolt jig
Slotted jig, in fused silica, 1968
1968
Four drilling jigs
Carbon jig with preforms and lutes ready for sealing
1968
Adam's Lantern Slide Binding Jig
Rectangular jig
1821
Jig for turning/engraving movables
1821
Jig for turning movables
1821
Circular metal jig
1821
Brass jig, London & South Western Railway
1895