Check the listing for details. 6 Dials DC Bridges Resistance Box Testing Equipment Decade Resistor ZX21E. Condition: New. Listed at 219.98 USD. 6 Dials DC Bridges Resistance Box Testing Equipment Decade Resistor ZX21E This rotary resistance box which has low zero resistance ,is used to adjust resistance in DC circuit. This equipment is commonly used in laboratories for schools, factories and scientific research units. The temperature of the air around should be +10℃~+35℃ and the relative humidity 30~80% when it is used . 1.Technical parameters: Indication Ω Types × 100M × 10M × 1M × 100k × 10k × 1k × 100 × 10 × 1 × 0.1 × 0.01 ZX21 — — — — 0.1 0.1 0.5 1 2 5 — ZX21a — — — — 0.1 0.1 0.1 0.5 1 2 — 2X21b — — — — 0.1 0.1 0.1 0.5 1 2 — ZX21c — — — — — 0.1 0.1 0.5 1 2 5 ZX21d — — — 0.5 0.1 0.1 0.5 1 2 — — ZX21e — — 1 0.5 0.1 0.1 0.5 1 — — — ZX21f — 2 1 0.5 0.1 0.1 0.5 ZX21g 5 2 1 0.5 0.1 0.1 Current≤（A） 60 μ 180 μ 0.6 m 1.8 m 6 m 18 m 60 m 180 m 0.6 1.5 3 2.Adjusting range ZX21： (0~9）×（0.1~10k）Ω ＝0~99.9999 kΩ ZX21a:（0~10）×（0.1~10k）Ω ＝0~111.1110 kΩ ZX21b：（0~9）×（0.1~10k）Ω ＝0~99.9999 kΩ ZX21c：（0~10）×（0.01~1k）Ω＝0~11.11110 kΩ ZX21d：（0~10）×（1~100k）Ω ＝0~1.111110MΩ ZX21e：（0~10）×（10~1M）Ω ＝0~11.11110MΩ ZX21f：（0~10）×（100~10M）Ω ＝0~111.1110MΩ ZX21g：（0~10）×（1k~100M）Ω ＝0~1.111110GΩ3.Zero resistance: （30±5）mΩ4.The basic errors are regulated in Table 1.5.The allowable current of each group resistance are shown in Table 16.The dielectric strength between resistance box circuit and shell can withstand 50 Hz frequency,2000V AC, which lasts 1 minute.7.The insulation resistance between resistance box circuit and shell is not less than 1000MΩ8.The weight of the resistance box is about 1.3 kg,and its size is 200×150×110mm3. PAYMENT INFORMATION: 1.We can accept Credit Cards,Paypal,T/T,Escrow and so on.2.The buyer is responsible for any tax and/or duty charged by their country. INTERNATIONAL SHIPPING: The package will be shipped by EUB DHL, FEDEX or EMS. After we shipped the parcel,we'll fill in the tracking number and inform you by e-mail.Please write the correct address and telephone number when you make orders,so the courier can contact you when they deliver the parcel to you. thanks WARRANTY INFORMATION: 1.All the products have been checked and packed in good condition before dispatch.2.All the products with one year warranty.3.If you find any quality problems,please send it back within 3 days,and we'll send you a new one or refund you the payment after we get the returned one.4.Buyers have to pay for the return cost and we will pay the cost for resend5.All products returned should be in new conditions.