| NAME | MATCH NR. |
DESCRIPTION |
| Ecobra | 0813 | Generic slide rule of aluminium, 154x28x3 mm Front Scales: 1) A = B 2) 3) C = D R Back Scales: 4) = 2) = 5) |
| Ecobra 1261 | 0820 | Generic slide rule of metal, 150x29x4 mm Front Scales: 14cm / A = B C = D |
| Ecobra 1450 | 5759 | Generic slide rule of metal, 143x33x7 mm Front Scales: 12cm / K A = B CI C = D L ] 5inch Back Scales: = S T = |
| Ecobra 1461 Rietz | 0821 | Generic slide rule of aluminium, 155x28.5x2.5 mm Front Scales: K A = B R C = D lg Back Scales: 12cm = sin tg |
| Ecobra 1500 | 3129 | Generic slide rule of metal, 26.8x34x7 mm Front Scales: 25cm / K A = B CI C = D L ] 10inch Back Scales: = S T = |
| Ecobra 1511 Rietz | 0823 | Generic slide rule of aluminium, 305x32x4.3 mm Front Scales: K A = B R C = D lg Back Scales: 25cm = sin tg = 10inch |
| Ecobra 1561 | 3660 | Generic slide rule of aluminium, 162x28x3 mm Front Scales: K A = B lg C = LL3 LL2 LL1, Back Scales: sin tg DF = CF CI C = D P |
| Ecobra 160 | 0819 | Generic disc of plastic, 80x2.5 mm Front Scales: A D = C CI |
| Ecobra 1611 Darmstadt | 0824 | Generic slide rule of metal, 314x40x3.5 mm Front Scales: K A = B lg C = LL3 LL2 LL1 Back Scales: sin tg DF = CF CI C = D P |
| Ecobra compasses | 5539 | Nautical 2 fold rule of aluminium, 185x15x6.5 mm Front Scales: Linie 1-10 Kreis z2-15 |
| Ecobra R 141 Rietz | 0814 | Generic slide rule of plastic, 155x37 4.2 mm Front Scales: 13cm / A = B CI C = D K \ 5inch Back Scales: = S L T = |
| Ecobra R 143 Rietz | 0816 | Generic slide rule of plastic, 162x38x4.5 mm Front Scales: 13cm / LL3 LL2 A = B CI C = D K LL1 Back Scales: = P T L S = |
| Ecobra R 152 Perfect | 0818 | Generic slide rule of plastic, 320x43x4 mm Front Scales: L K A = B CI C = D S ST T Back Scales: 25cm = S LL2 LL3 = 10inch |