New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S.: with Directions for Silvering, Adjusting, &c.

← Back New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S.: with Directions for Silvering, Adjusting, &c.

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