 For appraisal and testing of gold. Wood case contains three acid bottles with ground glass stoppers and applicators, test stone, and a set of five gold testing needles for 8, 10, 12, 14, and 18 karat gold. Acid must be purchased locally. $122.10 |  For appraisal and testing of gold, silver, platinum, brass, nickel and German silver. Wood case contains three acid bottles with ground glass stoppers and applicators, test stone, set of gold testing needlesset of gold testing needles for 4, 6, 8, 10, 12, 14, 16, 18, and 20 karat gold. Acid must be purchased locally. $177.71 |
 Used to determine karat content of gold. Needles and item to be tested are rubbed on test stone and treated with acid to determine match. Set consists of nine needles for 4, 6, 8, 10, 12, 14, 16, 18, and 20 karat gold. $149.71 |  Needles and item to be tested are rubbed on test stones and treated with acid to determine match. Set of four needles for 10, 14 and 18 karat gold plus silver. $71.94 |
 Used to determine karat content of gold. Needles and item to be tested are rubbed on test stone and treated with acid to determine match. Set consists of five needles for 8, 10, 12, 14, and 18 karat gold. $89.52 |  A dark stone on which needle and item to be tested are rubbed. Use with test acid solutions. Stone measures 1-7/8" x 1-1/2" x 1/4" (48 x 38 x 6 mm). $28.73 |
 Test stone only. $10.66 |  For use with models 56762 and 56763. $32.32 |
 Adapter for model 56762. $43.08 |  $78.51 |
 Box only. $29.42 |