Wharton 4550 calendar clock range with numeric day and date with 57mm (2.3″) or 100mm (4″) digits

4720N/4.05.B.S with white printed locations – left
4720NIL50/5.05.R.S with illuminated locations – right

Viewing Distances

20m – (60ft)

Please note that we base our suggested maximum viewing distances on users with average eyesight working in typical ambient lighting conditions.

Users with below-average vision may experience problems at the maximum quoted ranges or under bright lighting.

Please also be aware that blue illuminated characters can appear slightly out of focus to some people due to variations in the response of the human eye to blue light.

Clocks with blue digits typically have a shorter maximum viewing distance for many people than red, green or yellow/amber characters.

4741N/4.12.R.S multi-time zone clock with red digits and lower white printed locations

4740NIL50/4.12.RG.S multiple zone wall clock with green time digits and green illuminated location names above

4741NIL50/4.12.RG.S Multi time zone clock with red time digits and green illuminated location names below

Viewing Distances

60m (180ft)

Please note that we base our suggested maximum viewing distances on users with average eyesight working in typical ambient lighting conditions.

Users with below-average vision may experience problems at the maximum quoted ranges or under bright lighting.

4740N/4.100.R.S time zone clock with red digits and upper white printed location names

4741N/4.100.B.S time zone clock with blue time digits and white printed locations below above

4740NIL50/4.100.Y.S time zone clock with yellow/amber time digits and yellow/amber illuminated location characters above

4741NIL50/4.100.RG.S time zone clock with red time digits and green illuminated location names below

4740N/4.100.G.S large time zone clock with green digits and upper white printed location names

4740N/4.100.R.S time zone clock with red digits and upper white printed location names

4741N/4.100.B.S time zone clock with blue time digits and white printed locations below above

4740NIL50/4.100.Y.S time zone clock with yellow/amber time digits and yellow/amber illuminated location characters above

4741NIL50/4.100.RG.S time zone clock with red time digits and green illuminated location names below

Viewing Distances

50m – (150ft)

Please note that we base our suggested maximum viewing distances on users with average eyesight working in typical ambient lighting conditions.

Users with below-average vision may experience problems at the maximum quoted ranges or under bright lighting.

Please also be aware that blue illuminated characters can appear slightly out of focus to some people due to variations in the response of the human eye to blue light.

Clocks with blue digits typically have a shorter maximum viewing distance for many people than red, green or yellow/amber characters.