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A TABLE of the Contract-Prices of BLOCKS for the ROYAL-NAVY,
MADE IN THE YEAR 1791, AND STILL UNALTERED.
All Lignum-vitae Sheaves Brass-coaked, and Cast-iron Sheaves Brass-coaked, with turned Iron Pins,
One Shilling per Pound.
All double Blocks are charged at the Price of Two single Blocks; Treble Blocks at the Price of Three
single; and fourfold Blocks at the Price of Four single Blocks.
Ten per Cent. is deducted from the above Prices in Peace, and 6 per Cent. added to the above Prices during War.

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