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"Repsolds' more recent form of the spider—line micrometer (since 1893) for large telescope. Quick motion in Position—angle for rough setting or for the measurement of close double stars is given by the large ring R." —Encyclopaedia Britannica, 1910

Repsolds Spider Line Micrometer for Quick Position Angle Motion

"Repsolds' more recent form of the spider—line micrometer (since 1893) for large telescope. Quick…

A Repsolds micrometer box for Yerkes Telescope. The wheels on the sides adjusts the telescope sideways, up, and down accurately.

Repsolds Micrometer Box for Yerkes Telescope

A Repsolds micrometer box for Yerkes Telescope. The wheels on the sides adjusts the telescope sideways,…