数字万用表的分辨率：分辨率式数字万用表末位一个数字所代表的物理量值；分辨率随量程的增大而成比例增大。例如：DT-930-F直流电压200mV档的分辨率为10μV，而2V档的分辨率为100μV。自动量程转换的特点：一些中高档的数字万用表在测量时能够自动转换量程，使测量误差减小，使用很方便。但每次测量都从最大量程开始，逐渐减少到合适量程，当所测量值较小时，读数等待时间较长。
Electromatic Proximity Switch EI1805NNOP #22147
Safco Cable 10-99-0046, F3-14 #30295
Norgren T74E-6AA-P1N Lockout Valve #10620
Norgren T74E-4AA-P1N Lockout Valve #10621
IMO Contactor MC10-S-10 #33223
Allen Bradley 592-J0V16 Overload Relay #19031
E-T-A Magnetic Re-Setable Trip Switch 43-200-MO #30503
Ross Lock Out and Exhaust Valve 1523 C 4002 #30946
Advance Capacitor 7C350P24, 35 MFD #27967
Fast Heat Strip Heater RM020871, 500 Watt #16753
Allen Bradley Overload Relay 595-A02 #13718
Cemco High Temperature Limit Switch 101K L595 #30890
Allen Bradley Z-16065 Limit Switch Head #32517 P0961BD-GW30B
Pepperl & Fuchs Proximity Switch NBB2-12GM50 #32527
Idec Pushbutton / Contact Block Green ABD11ON #18424
Gould/Shawmut Time Delay Fuse TRS25OR #27396
Thomson Ball Bushing A243848 #29960
Impervitran / Micron Transformer B250BTZ13JK #34999
Allen Bradley Operator Head 40146-013-60 #16844
Jefferson Electric Transformer 636-2421-000, #12785
Siemens Contactor 42CF35AJBPW #30726
Omron Output Unit C200H-0D212, #7851
Durakool Mercury Relay AFM215-303 #25858
General Electric Contactor CLOOD310T & BSLDZ #17045
Interlink BT/Bus Stop Cable RSM RKC 578-3M #27922
Cooper Crouse-Hinds CHDN-EAE-*** 120″ long #27921
Turck Proximity Switch BI2-EM12-AP6X-H?1141 #32531
Ferraz Shawmut Fuse TRS250R, 250 Amp, #21397
Roland Limit Switch W42G Operating Head #32537
