Robot Filter Size Chart

Indestructible Security Camera

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Rangefinders

3-3/4 cm  f2.8 Tessar

37.5mm f2.8 Xenar

Xenon 40mm f1.9

38mm f2.8 Xenar

45mm f2.8 Xenar

50mm f1.9 Xenon

30mm f3.5 Xenagon

150mm f4.5 Tele Xenar

Radionar 38mm f3.5

32.5mm f2.8 Tessar

7.5cm f3.8 Tele Xenar

37mm f2.8 Tessar

Xenon 40mm f1.9

38mm f2.8 Xenar

45mm f2.8 Xenar

50mm f1.9 Xenon

30mm f3.5 Xenagon

150mm f4.5 Tele Xenar

37.5mm f3.5 Radionar

40mm f1.9 Xenon

38mm f2.8 Xenar

40mm f1.9 Xenon

45mm f2.8 Xenar

50mm f2 Sonnar

50mm f1.9 Xenon

4cm f2 Biotar

10cm f3.8 Tele Xenar

135mm f4 Tele Xenar

Primotar  30mm f3.5

Trioplan 30mm f2.8

Tele-Megor 60mm f5.5

Tessar 3cm f2.8

Tessar 3cm f3.5

Tele Xenar 5cm f5.5

Tele Xenar 75mm

Xenagon 30mm

Robot II

Robot II,IIa

Robot IIa

​Robot IIa

​Robot IIa

​Robot IIa

​Robot IIa

​Robot IIa

Robot II

Robot II

Luftwaffen

German Army

Robot Star II

Robot Star II

Robot Star II

Robot Star II

Robot Star II

Robot Star II

Robot IIa

Star Classic

Robot Royal

Robot Royal

Robot Royal

Robot Royal

Robot Royal

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Robot I

Robot I

Robot I

Robot I

Robot I

Robot I

Junior Star

Junior Star

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38mm38mm

38mm

38mm

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38mm

38mm

38mm

38mm

38mm

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Serial No. Prefix per Model

Robot II - B

Robot II Luftwaffen - F

Robot IIa - C

Robot Star - D

Robot Junior - J

Robot Star II - L    (Later models '2')

Robot Royal Model III - G

Robot Royal 18, 24 - G

Robot Royal Model II - H

Robot Royal 36, 36S - Z

Robot Recorder - K