Description

This microscope is an example of the Ross 'Bar Limb' type of microscope construction  introduced in 1843. The microscope is contained in its original solid Mahogany Cabinet with 2 opening doors at each end. The microscope slides out of the cabinet with the binocular tubes held to one side o the case with a latch. The Binocular body tubes screw onto the limb and lock in place against a stay. The microscope is signed on the bak of the foot;

ROSS LONDON

and on the base of the biocular tubes

Wenhams Binocular
By Ross London

The Microscope stands on a Y shaped foot with the rectangular body supported on tall and elegant uprights terminating in trunnions. On he bottom of the body is a large tube to carry the plano-concave mirror on a collar and gimble. The substage is quite simple being a collection of interchangeable accessories held in place with a dovetail. The Stage is mechanical with screw and rack and pinion X-Y movement and a rotating upper stage. A Hole at the front allows the frog/fish plate to be attached. Course focusing is via  the two large wheels at the back acting on rack work at the back of  a triangular pillar. The limb has a locking nut at the back and fine focusing acting on a lever which lifts and lowers the nosepiece. The Binocular body tubes have an interocular focus via rack work at the top.

The microscope comes with a good collection of accesories which include;

2/3 Ross lens & can
1 1/2 inch Ross lens & can
1/8th inch Ross Lens In a Dring can
1 inch lens by Watson Brothers
3/4 inch lens by Ross
 Pair of binocular eyepieces marked A
Pair of binocular eyepieces marked B
Pair of binocular eyepieces marked C
Eyepiece polarizer
Eyepiece lucida
Frog/Fish Plate
Large Live Box
Small Live Box
Sub-stage Polarizer 
Sub-stage Wheel of stops
Sub-stage Dark field illuminator 
Stage forceps
Diatom test slide
Glass stage
Brass Selenite stage
Zoophyte trough
Original Key

This is a good early example of a classic instrument thta came to be one of the most famous designs in microscope history. A similar instrument is listed in 'The Great Age Of The Microscope' on page 155. Le'Turner says 'this is an example of the new design by Ross introducing a shape of foot that became extremely popular in England. 

The microscope is in good cosmetic condition with wear and marks to the finish consummate with age and use. Opticaly the instrument is as it should be with good clear images of high contrast. Mechanically everything works as it should.

In all this is a good example of a rare instrument by one of the Great makers of the 19th century.

We have other Instruments  available on our website 

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