| |
 |
|
Jolly's Photometer
(LT-2110) |
Made of two blocks of translucent material with dimensions
25 x 20 x 12.5 mm, separated by a sheet of opaque
material. Mounted on a base, with window for viewing.
Fitted on a stem length 75 mm, on stand. When two sides
of the blocks are exposed to uneven illumination, the block
shows difference in color. |
|
|
|
|
