Crucible and lid

1968

Slotted jig, in fused silica, 1968

1968

Translucent "Vitreosil" fused silica furnace tube

1968

"Vitreosil" basin in translucent fused silica

1968

Racal Former, in fused silica, 1968

1968

Spectrosil Crucible, in fused silica, 1968

1968

Old gas globe in "Vitreosil" pure fused silica

Flash tube, in fused silica, 1968

1968

Bodenstein Gauge

1968

Spring, in fused silica

1968