Account of the Skerryvore lighthouse — APPENDIX, No. III. NOTES ON THE GRINDING OF THE VARIOUS PIECES COMPOSING THE INSTRUMENTS USED IN DIOPTRIC LIGHTHOUSES, C

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Account of the Skerryvore lighthouse APPENDIX, No. III. NOTES ON THE GRINDING OF THE VARIOUS PIECES COMPOSING THE INSTRUMENTS USED IN DIOPTRIC LIGHTHOUSES, C · ch 23/40

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