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Antique brass Watson microscope objective 1/6 in NA0.87

Item number: 320254379965
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Antique brass Watson microscope objective 1/6 in NA0.87
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Winning bid:£17.00 

Ended:23-May-08 13:14:48 BST
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Item location:Huddersfield, United Kingdom
History:2 bids
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Starting time:20-May-08 13:14:48 BST
Starting bid:£14.00
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Seller:iancw( 419Feedback score is 100 to 499)
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Member:since 27-Apr-00 in United Kingdom
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Item Specifics - Scientific Collectables
Type:

Scientific Instruments

Sub-Type:

Microscopes

Material:

Brass

Period:

1800 to 1900

Condition:

Used


Antique brass Watson microscope objective

Marked '1/6 IN.' '0.87 N.A.'

'W. Watson and Sons, London'

RMS thread.

A very attractive objective by this famous maker. A super golden brown and hardly marked lacquer.

Front element bright, some surface pitting mainly to edge which doesn't markedly affect performance.

Optics look bright when inspected with phase telescope.

A high NA of 0.87. Mag is ca. 38x on a 160 mm tube and a competent performer for its age. Image below of test diatom Pleurosigma angulatum (NBS slide)
showing punctae with deep blue filter and oblique lighting.

UK shipping £1, elsewhere £2.


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Antique brass Watson microscope objective 1/6 in NA0.87 on eBay, also, Scientific Instruments, Science Medicine, Antiques (end time 23-May-08 13:14:48 BST)
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