Description Condition This is a GOST 5641-66 precision V-block and clamp pair, supplied in the original wooden storage box with all hardware. The blocks themselves look virtually unused — only very light superficial marks can be seen under close inspection. These marks are consistent with long-term storage rather than actual workshop use.Both blocks have been kept under a protective lubricant coating, which has preserved the ground faces and V-grooves extremely well. Although they present as new, they are listed as used due to age and prior ownership. These USSR-era V-blocks were built for layout work, verifying cylindrical parts, machining setups, inspection tasks, and general toolroom use. Their mass, accuracy, and stable geometry make them reliable on the surface plate or on the mill table. Features SpecificationDetailsStandardGOST 5641-66TypePrecision V-block pair with clampsManualPDFClassificationType I, Class 2Block Size100 × 105 × 80 mmMaterialPrecision-ground steelV-Groove90° V, matched pairMachining FeaturesSide cutouts for clamping to a mill table or fixtureHardwareFull clamp set includedStorage CaseOriginal wooden box with factory plateOriginUSSR-era productionCondition NotesNear-unused appearance, light storage marks, preserved with lubricant Keywords GOST V-blocks, 5641-66 V-block pair, Soviet precision tools, USSR V-block, machinist V-blocks, inspection blocks, cylindrical holding tools, marking-out tools, mill table clamping V-blocks, matched V-block set View the manual PDF (translation required)
