Quick note: I've been getting some questions along the lines of "will this fit my piano". I certainly don't mind questions and will be glad to help with some additional information.
I've added a photo showing and hopefully visually defining some of the measurements and angles involved. Bore distance and rake angle are probably the most important as they determine the strike point of the hammer.Hammer width - about 9.5mm (3/8") Bore distance (tip of felt to center of hole for shank) - 50mm / 1.97". Bore angle - 12 degrees at low tenor, fanning to zero degrees at high. Rake angle - 0 degrees.
Quantity - 39, numbered 27 through 64. I'm Howard Gustafson with Ragland Piano Company and I've serviced and rebuilt pianos and player pianos full time since 1985. Your success with my products is very important to me and I'm glad to help before or after the sale.