A large vintage American Rieker Instrument Co metal and wooden spirit level with an inclinometer. 200 mm. Marked, Rieker Inst. Co., Phila. Presented in an original wooden case with two hooks. Circa: 1920s to 1960s. Rieker Inc. has been a world class inclinometer manufacturer since 1917, now providing total sensing solutions with telemetry. Antique and Vintage American Tools and Instruments For Collectors.

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