Abstract: A housing for a magnification loupe is provided having a body portion for an eyepiece lens and a nose portion for an objective lens. The body portion for the eyepiece lens includes outer circumferential threads over which the objective nose portion fits. The objective nose portion includes a pin slot defining an arc across the body of the nose. The arc is configured such that a pin may be secured through the holes in the nose piece to co-act with the threads of the eyepiece body such that radial movement is prohibited.

Abstract: A housing for a magnification loupe is provided having a body portion for an eyepiece lens and a nose portion for an objective lens. The body portion for the eyepiece lens includes outer circumferential threads over which the objective nose portion fits. The objective nose portion includes a pin slot defining an arc across the body of the nose. The arc is configured such that a pin may be secured through the holes in the nose piece to co-act with the threads of the eyepiece body such that radial movement is prohibited.

Abstract: A housing for a magnification loupe is provided having a body portion for an eyepiece lens and a nose portion for an objective lens. The body portion for the eyepiece lens includes outer circumferential threads over which the objective nose portion fits. The objective nose portion includes a pin slot defining an arc across the body of the nose. The arc is configured such that a pin may be secured through the holes in the nose piece to co-act with the threads of the eyepiece body such that radial movement is prohibited.

Abstract: A housing for a magnification loupe is provided having a body portion for an eyepiece lens and a nose portion for an objective lens. The body portion for the eyepiece lens includes outer circumferential threads over which the objective nose portion fits. The objective nose portion includes a pin slot defining an arc across the body of the nose. The arc is configured such that a pin may be secured through the holes in the nose piece to co-act with the threads of the eyepiece body such that radial movement is prohibited.

Abstract: The objective of combinatorial chemical synthesis is the preparation of a very large number of different molecular entities by a randomized process of sequential chemical syntheses. The present invention provides a combinatorial vessel comprising a reaction region and a mixing region, adjacent to each other, which can be used to practice combinatorial chemical synthesis. The reaction region comprises a plurality of reaction cavities, in which a plurality of different chemical reactions may be performed simultaneously on resin beads. The resin beads are then transferred to the mixing region and mixed into a single group. Then, the resin beads are transferred into the reaction cavities. The process of performing reactions, transferring to the mixing region, mixing, and transferring to the reaction region can be repeated multiple times to obtain a large number of resin beads, each of which has been exposed to a series of reactions different from most of the other resin beads.