5 Vintage Speed & Feed Milling Calculators or promotional/advertising charts. Pre-owned with some age-related yellowing, wear, scuffs. Pieces of the Love Joy selector have broken off/missing. Included are:
- 1967 Futurmill chip volume, speed and feed calculator. Carbide milling on reverse.
- 1965 Lovejoy Tool Company speed & feed selector for mulling.
- 2 Guhring carbide speed and feed charts. One is dated 1989. The other is undated.
- 1988 Carboloy double sided chart.