Focal Plane Roller-Blind 150th Sec Curtain. Probably for Thornton-Pickard T&I Shutter. There were earlier 'Fixed slot' 1/150th sec curtains of a similar pattern around 1905-10 but none reached the pinnacle of 450th.
antique photography bundle Wooden half plate illford press plate etc
Bialetti 1/2 Half Cup Moka Pot Filter Plate & 1 Gasket/Rubber Ring - La Mokina
0.8/1.0/1.2/1.5/2.0/2.5/3.0mm Thick Plane Mineral Glass Watch Crystal 20-60mm
16mm - 44mm Round Watch Crystal 1mm Thick Mineral Plane Dome Watch Glass
0.8/1.0/1.5/2.5/3.0/3.5mm Thick Plane Mineral Glass Watch Crystal Glass 14-60mm
1.0/1.2/2.0/2.5/3.0/3.5mm Thick Plane Mineral Glass Watch Crystal Glass 19-60mm