Comprises:Laminated U and I cores of low-loss magnetic material,
to form a closed core of cross-section 25mm in plane of laminations,
32mm perpendicular to them, I-core length 102mm, U core external
height 102mm, internal height to take bobbin length 77mm.
Pair of pole pieces, each 65x30x25 mm, length x width x height
with one end shapred to part of a cone for maximum flux density.
Hole drilled through total length along cone exis to take
a light beam. Pole pieces will accept supportrods and shading
ring of accessory set 2 and may be clamped at any separation
on U-Core, or in contact as a non laminated I-core.
Cast aluminium alloy stand consisting of a heavy base on
four rubber feet with two removable clamping arms. Maximum
dimensions of base 190x200x115mm, widthxdepthx height. Channel,
35mm wide, 3 mm deep to take transformer core, extends across
full width. Integral support for arms, to rear, is below the
level of the pole-pieces. Arms pivot on steel spindle with
adjustment of knobs to rear bringing hard rubber pads at front
end of arms to bear on transformer core. Synethetic hamme
finish exvept of clean metal in channel and 4 mm hole to take
an earthing plug lead.