Luminex Linen Prover. 
This is an adaptation of the Luminex magnifier described on page 108, the addition of a suitable 
aperture plate to this magnifier makes an ideal linen or thread counter. if threads in a dark 
material are to be counted, the brilliant illumination thrown upon it makes it a very much easier 
matter to count the threads than in the case of an ordinary linen prover. 
Wigs aperture es is made in two forms : one has three dimensions, 
3 in., fin., and zp in., the other, two dimensions } in. and din. Especial 
care has been apa in its manufacture to ensure the accuracy of these 
dimensions. 
The magnifying power is x 10. 
A hole is provided in the side of the reflector by means of which a 
needle can be introduced to facilitate counting. 
A clip is provided on the torch to keep the light on during examination. 
No. 3724. Luminex linen prover, x10, oe with lamp and 
IDEN hae ee S53 See ae ; 23 Preece: 0) <0) 
a ama — 
No. 3717. Linen prover, complete in case ... /1 15 0 
This convenient type of linen prover enables the counts 
to be readily taken. It is fitted with a pointer which traverses 
over the field by means of a screw actuated by a milled head. 
The scale is calibrated to give readings of lin., }in., }in., 10 
m/m. and 5 m/m. 
No. 3716. Linen provers. 
Sad. Si) ide 
lin. x 4in. x }in. Brass. mount10 0 Nickel mount 11 6 
lin. x4 in. x}in. x 33% in. _,, LOE 6 i 9 
din. xX fin. X gy in. - a6 “ 1OSe3 
icine < 1eink . 14 6 a 16> 0 
No. 3713. Reading glass on stand. 
Diameter of lens 
No. 3714. Pocket reading glass 
with folding handle, in nickel mount 
Diameter of lens 
2 in. 5s. 9d. 
No. 3714. 
late 
