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811/MO DEMONSTRATION DIFFRACTION GRATING
For demonstration the principle of the diffraction grating and the way in which its properties are dependent upon the number of lines per unit length. Comprises a card mount 90 x 40 mm approximately with three 16 x 9 mm apertures, each containing a diffraction grating replica. The gratings are of 100 lines/ mm., 300 lines/ mm. and 600 lines/ mm. respectively. And are protected by cover glasses. |
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813/MO EYE LOUPE : WATCH MAKERS
(A) Watch Makers Eye Loupe available in magnification of 1x, 2x, 3x, 4x, 5x, 10x (B) Watch Makers Double Eye Loupe available in magnification of 10x, 12x, 14x |
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815/MO
FRESNEL'S BI-PRISMS
Optically worked. Made from Crown glass. a)40 x 30 mm b) 50 x 40 mm |
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817/MO
GLASS CUBES : Hollow
Nicely cemented at edges with adhesive, with stopper. a) Size 38 x 38 x 38 mm b) Size 50 x 50 x 50 mm |
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818/MO
GLASS SLABS : Semi circular
All sides polished. Made from Bubble free sheet glass. a)Size 100 x 18 mm b) Size 90 x 18 mm |
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819/MO
GLASS SLABS : Rectangular
Made from moulded glass.
All sides polished. |
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821/MO
LINEN TESTER
Thread Counter. Brass chrome plated body, a) Size: 1/4" x 1/2" x 1" combined. a) Size: 1" x 1" x 1" |
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