![]() |
This compound gyroscope is made of polished brass and is mounted...
![]() |
Mahogany and brass Galvanometer to measure the amount of current...
![]() |
Voltmeter teaching aid by W & J George Ltd, Birmingham, no 25938A....
![]() |
90 square cards with pictures of different retinal pathologies....
![]() |
Early 20th Century brass barrel-shaped viewer on a cast iron stand,...
![]() |
Blackened brass barrel-shaped viewer on a cast iron stand and brass...
![]() |
Boxed set including a blackened brass barrel-shaped viewer on...