DR DOLLARS INTEGRATING MICROMETER by UNICAM INSTRUMENTS CAMBRIDGE
01-019. English, mid 20th century, trade mark stamped "UIC" for Unicam Instruments Cambridge and serial numbered 6,696. Made of gray enameled aluminum with stainless steel fittings, 6" wide x 4 5/8" deep x 2 1/4" high overall, with 6 independent knurled measuring wheels by means of which the proportional amounts of 6 different mineral constituents in a thin section can be added up in one operation. This unusual integrating stage is in very good mechanical condition.
