邮政信箱

模型HV-EXP4248
邮政信箱Hoverlabs是制造ag亚博集团商，出口商的邮政信箱的描述a)邮政信箱(插头型康斯坦松线圈):-&这些有三个定量线圈10,100,1000，欧姆和16系列1至5000欧姆。总11110欧姆。电池和检流计有两个带银触点的接线键。1)邮政信箱是由经过特殊处理的材料特别设计和制作的。插头:可互换的黄铜插头，顶部装有椭圆形胶木。3)线圈:采用进口双丝包线绕制在胶木筒子上。线圈经过热处理和老化。4):标准尺寸,由耐腐蚀好硬铜金lacquard准确性+ 0.05%到0.1% 5)邮政信箱:-康铜线圈圆块。6)邮政信箱:——漆内阁波兰康铜线圈。7)邮政信箱:——非常有用的大学机构包含一些特殊特性精度0.05% + 0.02% + 8)邮政信箱:-最准确的双接触重块出口质量。 b) Post Office Boxes (Manganin Coil):- 1) Post Office Box: 3 ratio accuracy + 0.02% to + 0.05% lacquered Double Contacts. Compiled In a nicely Polished Teak wood Box. 2) Post Office Box :As above with heavy Gun metal Block Export quality. 3) Extra charges for 4 ratio arms c) Post Office Boxes Dial Type:- These Post office boxes are specially designed for accurate work each dial is provided for a decade of Resistance values. The dial assembly is mounted on ebonite base is enclosed in teak wood Box nicely Polished. The instrument is fitted with two Tapping Keys and terminals for Battery and Galvanometer 1) Post Office Box : Dial Type Constanta coil with 6 Dial. 2) Post Office Box 6 Dials : ‘A; grade and Manganin Coils Accuracy + 0.2% + 0.05%&3) Post Office Box 5 Dials : Constanta Coil ‘B’ grade. 4) Post Office Box 5 Dials : Manganin Coil ‘A’ grade.