Description
Condition
New Old Stock (NOS).
This item is in pristine, unused condition. It has been preserved in its original wooden storage box and retains the original protective wax paper wrapping and all manufacturer documentation. The level shows no signs of wear or previous use, making it an excellent find for collectors of fine Japanese metrology tools or machinists seeking a brand-new instrument from this era.
Product Overview
The Riken Keisokuki 150mm Machinist Level is a precision instrument engineered for the most critical leveling tasks in industrial environments. With an ultra-high sensitivity of 0.02mm per meter, it is designed to detect minute deviations in flatness and horizontal alignment. This tool is essential for the installation and calibration of high-precision machine tools, such as lathes, milling machines, and surface grinders, where a perfectly level bed is required to maintain machining tolerances. The heavy cast iron body provides stability and thermal mass, while the precision-ground measuring face ensures reliable contact with work surfaces.
How-to guide for calibrating your level
Brand Information
Riken Keisokuki Co., Ltd. (RKN) is a distinguished Japanese manufacturer of precision measuring instruments, with roots tracing back to the Institute of Physical and Chemical Research (RIKEN). Based in Niigata, a region famous for its metalworking craftsmanship, the company is renowned for producing tools that meet the exacting JIS (Japanese Industrial Standards) for accuracy. Riken Keisokuki levels are widely respected in the metrology field for their durability, superior glass vial visibility, and consistent performance over decades of use.
Specifications
| Feature | Specification |
| Brand | Riken Keisokuki (RKN) |
| Length | 150mm |
| Sensitivity | 0.02mm / 1m |
| Material | High-Grade Cast Iron |
| Vial Type | Precision Ground Glass |
| Adjustment | Zero-adjustment screw mechanism |
| Included Accessories | Original Wooden Box, Papers, Wax Paper |
| Country of Manufacture | Japan |
Keywords
Riken Keisokuki, RKN, precision machinist level, spirit level, 150mm level, 0.02mm accuracy, Japanese metrology, machine leveling, lathe setup, mill alignment, NOS tools, industrial measurement, JIS B 7510.
