Skip to content
History of Science Museum

Screw-Barrel and Compass Microscope with Accessories and Case

Inventory Number 48460


Acknowledgement: © History of Science Museum, University of Oxford, inv.48460

Subject
Microscopy
Item type
Object
Provenance
Presented by Lewis Evans
Other inscriptions
On a white label on the bottom of the box: "3581/A/WS/"
Object type
Microscope Case
Dimensions
Height: 42mm Width: 165mm Depth: 95mm Weight: 457g
Inventory No
48460

Description

Screwbarrel and compass microscope. The microscope consists of a copper alloy cylinder with a threaded hole at one end to take the eyepiece. A second copper alloy cylinder that has a condensing lens and an external thread screws into the first. Three copper alloy disks make up the stage and are held against the internal cylinder by a Steel spring. Two of the disks are thin and flat, the third has a semi-circular indentation for holding glass phials. There is a boss at the side of the outer cylinder to take an Ivory handle. The Ivory handle is fish-shaped and has a threaded copper alloy tip that attaches to the microscope. The case is softwood covered in black fish skin and lined with green velvet. It has a hinged lid with hook fasteners. The case also contains six objectives of which four have dust caps, a threaded ring on an arm with stage forceps attached on a hinge, tweezers, a talc box, a threaded copper alloy collar and 1 Bone slider.