Browse Items (3473 total)

Children’s and Household Tales’ by the Brothers Grimm, 2nd edition

In glass case with black painted wood. Perfect order. Case key in bottom. Another key with square hole and ivory disc handle unlikely to belong with this item.

Iron casing with lens and pin hole aperture at either end. 2 other holes on top and bottom.

2 copper cones with a brass strip of metal round the smaller end. Heat screens for White's differential thermopile, item 201183a

Hand held brass spectroscope with variable aperture and variable focus. Can see the prism inside it. Engraving on barrel.

Arnold's compensated escapement - demonstration of his patent No. 1328. A brass escapement on a wooden base

Pendulum for use with model of Graham's dead-beat escapement. Spring steel suspension, deal rod with hollow brass bob

Brass and wooden model of escapement with 60 second face. Pendulum ( ABDNP200022b ) fits on rear. Holes on right of base probably for small pulley wheel, now missing. Dial marked in seconds and labelled every 10 seconds. Escapement wheel 152 mm…

Article by the leading Socialist J Bruce Glasier, about why the police are not Socialists.

An article by the leading Socialist, J Bruce Glasier, about why clergymen are not Socialists.