Commodity2005200620072008
Drafting tables & machines, whether or not auto.$20,404$527$32 
Drawing/marking-out/mathematical calculating instr. other than drafting tab ...$11,447$6,508$3,555$3,665
Micrometers, callipers & gauges$22,845$56,666$40,881$36,682
Instruments for meas. length, for use in the hand (e.g., meas. rods & tapes ...$54,798$37,759$42,483$87,645
Parts & accessories of the instr. of 90.17$1,024$2,361$5,035$2,089
Total$110,518$103,821$91,986$130,081